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List of islands of Ireland

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From Wikipedia, the free encyclopedia

This article is about offshore islands. For lake and river islands, seeList of inland islands of Ireland.

Map all coordinates usingOpenStreetMapDownload coordinates asKML

This is alist of islands of Ireland.Ireland is itself an island, lying west of the island ofGreat Britain and northwest ofmainland Europe.

TheHebrides offScotland andAnglesey offWales were grouped with Ireland ("Hibernia") by theGreco-Roman geographer Ptolemy,^[1] but this was not geographically correct and is purely of historical interest.

Largest offshore islands by area and population

[edit]

English name	County	Area Hectares (Acres)	Population 2022^[2]	Area Rank	Population Rank	Bridge / Causeway
Great Island	Cork	2,475 (6,115)	>13000^[3]	4	1	Yes
Achill Island	Mayo	14,279 (35,283)	2345	1	2	yes
Gorumna	Galway	2,376 (5,871)	1044	5	3	Yes
Inishmore	Galway	3,090 (7,635)	820	2	4	No
Valentia Island or Valencia Island	Kerry	2,578 (6,371)	658	3	5	yes
Lettermore	Galway	912 (2,254)	542	12	6	Yes
Arranmore or Aran Island	Donegal	1,754 (4,335)	478	7	7	No
Inch Island	Donegal	1,386 (3,425)	396	10	8	Yes
Inisheer or Inishere	Galway	570 (1,400)	343	17	9	No
Bere Island or Bear Island	Cork	1,769 (4,372)	218	6	10	No
Lettermullen or Lettermullan	Galway	318 (787)	214	25	11	Yes
Inishmaan	Galway	948 (2,342)	184	13	12	No
Inishbofin	Galway	1,275 (3,151)	184	11	12	No
Rathlin Island	Antrim	1,437 (3,552)	141	9	c.22	No
Clare Island	Mayo	1,640 (4,053)	138	8		No

Total population of Irish offshore islands

[edit]

The number of people living on Irish offshore islands decreased dramatically during theIrish famine and the period following it. Since then the trend on most islands has been a decreasing population until the 1950s and 1960s, during which many islands were forcibly evacuated by theIrish Government as continuous bad weather meant that islanders were unable to travel to the mainland for several consecutive months. Of the remaining islands that were not evacuated, many of their populations have continued to dwindle ever since, with some seeing stabilisation or even a slight increase in population during and after theCeltic Tiger.

The chart below shows the total number of people living on Irish islands throughout the years.

Historical population

Year	Pop.	±%
1841	34,219	—
1851	29,314	−14.3%
1861	27,948	−4.7%
1871	26,571	−4.9%
1881	29,226	+10.0%
1891	26,149	−10.5%
1901	25,446	−2.7%
1911	24,700	−2.9%
1926	21,662	−12.3%

Year	Pop.	±%
1936	19,926	−8.0%
1946	18,665	−6.3%
1951	17,488	−6.3%
1956	16,118	−7.8%
1961	14,473	−10.2%
1966	12,899	−10.9%
1971	11,737	−9.0%
1979	10,866	−7.4%
1981	10,869	+0.0%

Year	Pop.	±%
1986	10,409	−4.2%
1991	9,569	−8.1%
1996	9,280	−3.0%
2002	8,884	−4.3%
2006	8,983	+1.1%
2011	9,087	+1.2%
2016	8,756	−3.6%
2022	8,931	+2.0%

Source:Central Statistics Office."CNA17: Population by Off Shore Island, Sex and Year".CSO.ie. Retrieved12 October 2016.

Full table

[edit]

English name	Irish name^{[n 1]}	County	Group/Location	Area Acres^{[n 2]}	Height Metres^{[n 3]}	Population 1841^[4]	Population 2022^[4]	Connection to mainland	Coordinates	OS grid	OS map	PDI ref
Rathlin Island	Reachlainn	Antrim	North Channel	3552^[5]	134	1010^[6]	141^[7]	Passenger ferry fromBallycastle	55°17′32″N6°11′30″W / 55.29222°N 6.19167°W /55.29222; -6.19167 (Rathlin Island)	D1452	[1]	61298
The Maidens or Hulin Rocks	Na Maighdeanacha	Antrim	North Channel				0	None	54°55.7′N5°43.6′W / 54.9283°N 5.7267°W /54.9283; -5.7267^[8]	D4612	[2]	1166440
Angus Rock		Down	Strangford Lough	0.4	2	0	0		54°19′51″N5°31′34″W / 54.33083°N 5.52611°W /54.33083; -5.52611 (Angus Rock)	J6145	[3]	—
Copeland Island	Oileán Chóplainn	Down	North Channel	295	33^{[n 4]}	31^[9]			54°40′29″N5°31′44″W / 54.67472°N 5.52889°W /54.67472; -5.52889 (Copeland Island)	J6083	[4]	1166534
Cannon Rock		Down	North Channel						54°24′28.7″N5°21′59.6″W / 54.407972°N 5.366556°W /54.407972; -5.366556 ("South Rock lightbuoy, near Cannon Rock")^[10]	J676531	[5]	—
Mid Island		Down	Strangford Lough	15		7^[11]				J566672	[6]	65848
Rough Island		Down	Strangford Lough	7	13^{[n 4]}	4^[12]		Causeway accessible at low tide^[13]		J494689	[7]	66037
Reagh Island		Down	Strangford Lough	128	19^{[n 4]}	14^[14]		Road		J525650	[8]	66111
Mahee Island	Inis Mochaoi	Down	Strangford Lough	177	27^{[n 4]}	28^[14]		Road via Reagh Island		J532640	[9]	66110
Wood Island		Down	Strangford Lough	23	8^{[n 4]}	4^[14]				J510642	[10]	66116
Rainey Island		Down	Strangford Lough	40		10^[14]				J528631	[11]	65894
Sketrick Island		Down	Strangford Lough	41		11^[14]		Road		J526625	[12]	65898
Trasnagh Island		Down	Strangford Lough	25		13^[14]				J536620	[13]	65899
Roe Island		Down	Strangford Lough	21		7^[15]				J542610	[14]	65896
Conley Island or Conly Island		Down	Strangford Lough	65		23^[15]				J529609	[15]	66233
Dunsy Island		Down	Strangford Lough	33	24^{[n 4]}	6^[15]				J543590	[16]	66236
Islandmore		Down	Strangford Lough	122	18^{[n 4]}	18^[15]				J541581	[17]	66241
Pawle Island		Down	Strangford Lough	50		12^[16]				J543573	[18]	66271
Simmy Island		Down	Strangford Lough	8		3^[16]				J531557	[19]	66274
Island Taggart		Down	Strangford Lough	77		15^[16]				J533547	[20]	66266
Castle Island		Down	Strangford Lough	113	37^{[n 4]}	68^[17]		Road		J511488	[21]	66882
Gores Island or Gore's Island		Down	Strangford Lough	99	30^{[n 4]}	18^[17]				J521494	[22]	66883
Salt Island		Down	Strangford Lough	51	16^{[n 4]}	2^[17]				J530502	[23]	66895
Rockabill	Cloch Dábhiolla	Dublin	Irish Sea			0	0		53°36′N6°0′W / 53.600°N 6.000°W /53.600; -6.000 (Rockabill)	O321627	[24]	1165790
Colt Island	Inis Coilt	Dublin	Skerries	7	13	0^[18]	0		53°35′N6°5′W / 53.583°N 6.083°W /53.583; -6.083 (Colt Island)	O265612	[25]	17032
St Patrick's Island	Inis Pádraig	Dublin	Skerries	15	12	0^[18]	0		53°35′7″N6°4′26″W / 53.58528°N 6.07389°W /53.58528; -6.07389 (St Patrick's Island)	O275612	[26]	17034
Shenick Island or Shenick's Island	Oileán Sionnaigh	Dublin	Skerries	15	8	4^[18]	0		53°34′20″N6°5′1″W / 53.57222°N 6.08361°W /53.57222; -6.08361 (Shenick Island)	O268598	[27]	17033
Lambay Island	Reachrainn	Dublin	Irish Sea	595	126 (Knockbane, and Tinian Hill)	89	16		53°29′30″N6°1′0″W / 53.49167°N 6.01667°W /53.49167; -6.01667 (Lambay Island)	O3151	[28]	1166603 Archived 14 June 2012 at theWayback Machine
Ireland's Eye	Inis Mac Neasáin	Dublin	Irish Sea	53	69	0^[19]	0		53°24′19″N6°3′49″W / 53.40528°N 6.06361°W /53.40528; -6.06361 (Ireland's Eye)	O2941	[29]	1166256
Bull Island or North Bull	Oileán an Bhulla	Dublin	Dublin Bay	c.740^[20]	4	12	14	Road causeways	53°22′1″N6°8′55″W / 53.36694°N 6.14861°W /53.36694; -6.14861 (Bull Island)	O2337	[30]	57172
Dalkey Island	Oileán Dheilginse	Dublin	Irish Sea	21	90^{[n 4]}	8^[21]	0		53°16′N6°5′W / 53.267°N 6.083°W /53.267; -6.083 (Dalkey Island)	O278263	[31]	16606
Keeragh Islands		Wexford	Saint George's Channel						52°11′42″N6°43′54″W / 52.19500°N 6.73167°W /52.19500; -6.73167 (Kerragh Islands)
Begerin Island or Beggerin Island	Beigéirinn	Wexford	North Slob	22^{[n 5]}	5^{[n 4]}	20	0	Road (no longer an island)		T082251	[32]	53675
Tuskar Rock	an Tuscar	Wexford	Saint George's Channel			4	0		52°12′10″N6°12′26″W / 52.20278°N 6.20722°W /52.20278; -6.20722 (Tuskar Rock)	T2207	[33]	1166860
Saltee Island Great	An Sailte Mór	Wexford	Saltee Islands	216	58	0	0		52°7′N6°36′W / 52.117°N 6.600°W /52.117; -6.600 (Saltee Island Great)	X9597	[34]	1166651
Bannow Island	Oileán Bhanú	Wexford	Bannow Bay	144^{[n 5]}	81	24	0	Road (no longer an island)		S819078	[35]	53760
Fota Island or Foaty	Fóite	Cork	Cork Harbour	767	30^{[n 4]}	209^[22]		Rail and road bridges (no longer an island)	51°53′57″N8°17′53″W / 51.89917°N 8.29806°W /51.89917; -8.29806 (Fota Island)	W7072	[36]	1166136
Great Island	an tOileán Mór	Cork	Cork Harbour	6115^[22]	91	9424^[22]	>12000^[23]	Rail and road bridges via Fota I; car ferry toPassage West	51°52′N8°17′W / 51.867°N 8.283°W /51.867; -8.283 (Great Island)	W8069	[37]	1166543
Rocky Island	an tOileán Carraigeach	Cork	Cork Harbour	3		3^[22]		Road bridge	51°50′N8°18′W / 51.833°N 8.300°W /51.833; -8.300 (Rocky Island)	W792649	[38]	9407
Haulbowline Island	Inis Sionnach	Cork	Cork Harbour	86^[24]	20	222	148	Road bridge via Rocky Island	51°50′30″N8°18′0″W / 51.84167°N 8.30000°W /51.84167; -8.30000 (Haulbowline Island)	W792654	[39]	1410428
Spike Island	Inis Píc	Cork	Cork Harbour	98	24	202	0		51°50′N8°17′W / 51.833°N 8.283°W /51.833; -8.283 (Spike Island)	W8065	[40]	1166269
Inchydoney	Oileán Inse Duine	Cork	Clonakilty Harbour	475	63	235	247	Road causeways (no longer an island)	51°36′7″N8°52′34″W / 51.60194°N 8.87611°W /51.60194; -8.87611 (Inchydoney)	W4039	[41]	1166540
Rabbit Island	Oileán Bhríde	Cork	Squince Harbour	18	19	17^[25]	0	None		W221315	[42]	13263
Fastnet Rock	Carraig Aonair	Cork	Atlantic Ocean		24	0	0		51°23′3″N9°36′1″W / 51.38417°N 9.60028°W /51.38417; -9.60028 (Fastnet Rock)	V8816	[43]	1165639
Cape Clear Island	Cléire	Cork	Carbery Islands	1502	160 (Killickaforavane)	1052	110	Passenger ferries (Baltimore;Schull, seasonal)	51°26′N9°30′W / 51.433°N 9.500°W /51.433; -9.500 (Clear Island)	V9521	[44]	543
Sherkin Island	Inis Arcáin	Cork	Carbery Islands	1248	101 (Slievemore)	1131	110	Passenger ferry fromBaltimore	51°28′N9°25′W / 51.467°N 9.417°W /51.467; -9.417 (Sherkin Island)	W0225	[45]	13016
Spanish Island		Cork	Carbery Islands	134	34	26^[26]	0	None		W033275	[46]	13005
Ringarogy Island	Rinn Ghearróige	Cork	Carbery Islands	951	44	597	88	Road bridge		W0528	[47]	1166618
Inishbeg	Inis Beag	Cork	Carbery Islands	370	37	335	23	Road bridge		W0631	[48]	13298
Mannin Island	Manainn	Cork	Roaringwater Bay	14	18	4^[27]	0	None		W016325	[49]	13298
Heir Island, Hare Island, or Inishodriscol	Inis Uí Drisceoil	Cork	Carbery Islands	380	26	358	29	Passenger ferry (Baltimore–Schull; seasonal)	51°29′29″N9°26′47″W / 51.49139°N 9.44639°W /51.49139; -9.44639 (Heir Island)	V9928	[50]	129542
Calf Islands	Na Laonna	Cork	Carbery Islands	77 (East) 62 (Middle) 63 (West)	22 (East) 14 (Middle) 28 (West)	19 (East)^[28] 39 (Middle)^[29] 21 (West)^[29]	0			V9626	[51]	1166289
Skeam East	Inis Céime Thoir	Cork	Carbery Islands	50	19	29^[28]	0	None		W0029	[52]	12938
Skeam West	Inis Céime Thiar	Cork	Carbery Islands	31	17	22^[28]	0	None		V987288	[53]	12939
Horse Island	Oileán an Chapaill	Cork	Carbery Islands	154	39	137	1			V980301	[54]	13378
Castle Island	Oileán an Chaisleáin	Cork	Carbery Islands	122	36	92^[30]	0			V957294	[55]	13369
Long Island	Inis Fada	Cork	Carbery Islands	341	31	336	17			V9228	[56]	13528
Whiddy Island	Faoide	Cork	Bantry Bay	1001	50	729	31	Seasonal passenger ferry toBantry	51°42′N9°30′W / 51.700°N 9.500°W /51.700; -9.500 (Whiddy Island)	V9650	[57]	8648
Chapel Island		Cork	Bantry Bay	16^[31]	22^{[n 4]}	4^[32]			51°42′N9°30′W / 51.700°N 9.500°W /51.700; -9.500 (Chapel Island)	V982498	[58]	8636
Ilnacullin, Garinish, or Garnish	Garinis	Cork	Bantry Bay	36	34^{[n 4]}	13	0		51°44′11″N9°32′28″W / 51.73639°N 9.54111°W /51.73639; -9.54111 (Ilnacullin)	V934548	[59]	8530
Roancarrigmore	Róncharraig Mhór	Cork	Bantry Bay	3	6	0	0		51°39′10″N9°44′50″W / 51.65278°N 9.74722°W /51.65278; -9.74722 (Roancarrigmore)	V791460	[60]	8731
Dinish Island	Duínis	Cork	Bantry Bay	45	40^{[n 4]}	13	0	Road bridge		V684455	[61]	8805
Bere Island or Bear Island	an tOileán Mór	Cork	Bantry Bay	4372^[33]	273^{[n 4]} (Knockanallig)	2108^[33]	187	Car ferries fromCastletownbere and Beal Lough	51°38′N9°53′W / 51.633°N 9.883°W /51.633; -9.883 (Bere Island)	V7044	[62]	1166542
Dursey Island	Oileán Baoi	Cork	Atlantic Ocean	1403	252	198	3	aerial tramway	51°36′N10°12′W / 51.600°N 10.200°W /51.600; -10.200 (Dursey Island)	V4841	[63]	8835
Inishfarnard	Inis Fearn Ard^[34]	Cork	Coulagh Bay	64	44	30^[35]	0		51°42′38.4″N10°1′32.2″W / 51.710667°N 10.025611°W /51.710667; -10.025611 (Inishfarnard)	V604528	[64]	8787
Ormond's Island	Oileán Urumhan	Kerry	Kenmare River	20	10	0^[36]		Causeway at low tide	51°49′35″N09°44′52″W / 51.82639°N 9.74778°W /51.82639; -9.74778 (Ormonds Island)	V792653	[65]	22944
Dinish Island	Duínis	Kerry	Kenmare River	25	11^{[n 4]}	11	0		51°50′50″N09°39′12″W / 51.84722°N 9.65333°W /51.84722; -9.65333 (Dinish Island)	V859673	[66]	22930
Dunkerron Island East	Oileán Dhún Ciaráin Thoir	Kerry	Kenmare River	22	5	15^{[n 6]}	0	None^{[n 7]}		V876692	[67]	23121
Dunkerron Island West	Oileán Dhún Ciaráin Thiar	Kerry	Kenmare River	30	5	15^{[n 6]}	0	None^{[n 7]}		V869691	[68]	23122
Cappanacush Island^{[n 8]}	Oileán an Tí	Kerry	Kenmare River	19	11^{[n 4]}	8^[38]	0	None		V854690	[69]	22947
Garinish Island	Garinis	Kerry	Kenmare River	57				None	51°48′17″N09°53′57″W / 51.80472°N 9.89917°W /51.80472; -9.89917 (Garinish Island)	V6892763122	[70]	22889
Greenane Islands	Oileáin an Ghrianáin	Kerry	Kenmare River	22^{[n 8]}^[39]	5	6^{[n 8]}^[39]	0	None		V853692	[71]	23022
Rossmore Island	an Ros Mór	Kerry	Kenmare River	319	32	0^{[n 9]}	15	Road bridge	51°49′35″N09°48′12″W / 51.82639°N 9.80333°W /51.82639; -9.80333 (Rossmore Island)	V758651	[72]	23166
Rossdohan Island	Oileán Ros Dochan	Kerry	Kenmare River	134	35	^{[n 10]}	0	Road bridge	51°48′10″N09°51′55″W / 51.80278°N 9.86528°W /51.80278; -9.86528 (Rossdohan Island)	V712627	[73]	23165
Sherky Island	Oileán Seirce	Kerry	Kenmare River	82	36	9^[41]	0	None	51°47′24″N09°53′58″W / 51.79000°N 9.89944°W /51.79000; -9.89944 (Sherky Island)	V686612	[74]	22909
Deenish Island	Duínis	Kerry	Atlantic Ocean	122	144	0	0		51°44′13″N10°13′09″W / 51.73694°N 10.21917°W /51.73694; -10.21917 (Deenish Island)	V466560	[75]	22214
Scariff Island	an Scairbh	Kerry	Atlantic Ocean	366	252	0	0		51°43′47″N10°14′53″W / 51.72972°N 10.24806°W /51.72972; -10.24806 (Scariff Island)	V445555	[76]	22224
Puffin Island	Oileán na gCánóg	Kerry	Atlantic Ocean	125	159	0	0		51°50′N10°25′W / 51.833°N 10.417°W /51.833; -10.417 (Puffin Island)	V3468	[77]	1166547
Little Skellig or Skellig Rock Little	Sceilg Beag	Kerry	Skellig Islands	17	134^{[n 4]}	0	0		51°46′N10°32′W / 51.767°N 10.533°W /51.767; -10.533 (Little Skellig)	V270618	[78]	22406
Skellig Michael or Skellig Rock Great	Sceilg Mhichíl	Kerry	Skellig Islands	44	186^{[n 4]}	0^{[n 11]}	0		51°46′N10°32′W / 51.767°N 10.533°W /51.767; -10.533 (Skellig Michael)	V2561	[79]	22405
Valentia Island or Valencia Island	Dairbhre	Kerry	Atlantic Ocean	6371^[42]	266 (Geokaun)	2886^[42]	658	Road bridge, and ferry	51°54′N10°21′W / 51.900°N 10.350°W /51.900; -10.350 (Valentia Island)	V3876	[80]	22439
Beginish Island	Beag Inis	Kerry	Valentia Harbour	159	63		0	Ferry	51°56′N10°18′W / 51.93°N 10.30°W /51.93; -10.30 (Beginish Island)		[81]	22439
Church Island	Oileán an Teampaill	Kerry	Valentia Harbour	1	4	0	0		51°56′13″N10°16′59″W / 51.937°N 10.283°W /51.937; -10.283 (Church Island)		[82]	101097
Lamb Island	Oileán na nUan	Kerry	Valentia Harbour	5	23	0	0		51°56′N10°17′W / 51.94°N 10.29°W /51.94; -10.29 (Lamb Island)		[83]	22156
Beginish	Beiginis	Kerry	Blasket Islands	32	14	84	0		52°6′56″N10°30′26″W / 52.11556°N 10.50722°W /52.11556; -10.50722 (Beginish)	V263988	[84]	22146
Great Blasket Island	an Blascaod Mór	Kerry	Blasket Islands	1060	292 (Croaghmore)	153	0		52°6′N10°32′W / 52.100°N 10.533°W /52.100; -10.533 (Great Blasket Island)	V259963	[85]	22578
Inishnabro	Inis na Bró	Kerry	Blasket Islands	102	175	0^[43]	0		52°3′28″N10°36′32″W / 52.05778°N 10.60889°W /52.05778; -10.60889 (Inishnabro)	V2193	[86]	22580
Inishvickillane	Inis Mhic Aoibhleáin	Kerry	Blasket Islands	171	135	3^[43]	0		52°2′37″N10°36′30″W / 52.04361°N 10.60833°W /52.04361; -10.60833 (Inishvickillane)	V2191	[87]	22582
Tearaght Island	an Tiaracht	Kerry	Blasket Islands	47	183^{[n 4]}	0^{[n 12]}	0		52°4′36″N10°39′30″W / 52.07667°N 10.65833°W /52.07667; -10.65833 (Tearaght Island)	V179948	[88]	22583
Inishtooskert	Inis Tuaisceart	Kerry	Blasket Islands	186	172	0^[43]	0		52°7′50″N10°34′42″W / 52.13056°N 10.57833°W /52.13056; -10.57833 (Inishtooskert)	Q2301	[89]	22581
Magharee Islands or the Seven Hogs	Oileáin an Mhachaire	Kerry	Atlantic Ocean	32 (Illauntannig), 29 (Illaunimmil), 13 (Inishtooshkert), 9 (Gurrig), 6 (Reennafardarrig), 5 (Illaunboe)	23^{[n 4]} (Gurrig), 16 (Inishtooshkert), 12 (Illaunboe), 15 (Reennafardarrig), 15 (Illauntannig), 22 (Illaunimmil)	0	0		52°19′N10°2′W / 52.317°N 10.033°W /52.317; -10.033 (Magharee Islands)	Q6022	[90]	1166527
Fenit Island	an Fhianait	Kerry	Tralee Bay	439	12	315^[44]		Track (tombolo)	52°17′N9°52′W / 52.283°N 9.867°W /52.283; -9.867 (Fenit Island)	Q720174	[91]	24367
Carrig Island	Oileán na Carraige	Kerry	Shannon Estuary	231	6	105	4	Road bridge	52°37′17.59″N9°4′15.74″W / 52.6215528°N 9.0710389°W /52.6215528; -9.0710389	Q985481	[92]	23885
Tarbert Island	Oileán Thairbirt	Kerry	Shannon Estuary	63^{[n 5]}	20^{[n 4]}	134	2	Roads (no longer an island)	52°34′21″N9°22′30″W / 52.57250°N 9.37500°W /52.57250; -9.37500 (Tarbert Island)	R075494	[93]	24189
Foynes Island	Oileán Fainge	Limerick	Shannon Estuary	294	60^{[n 4]}	83^[45]	3		52°37′21.8″N9°6′45.1″W / 52.622722°N 9.112528°W /52.622722; -9.112528	R2553	[94]	1166539 Archived 7 August 2012 at theWayback Machine
Aughinish	Eachinis	Limerick	Shannon Estuary	1066	21	140^[46]		Road bridges	52°37′17.59″N9°4′15.74″W / 52.6215528°N 9.0710389°W /52.6215528; -9.0710389	R2853	[95]	1166075
Green Island	Oileán Uí Uainín	Clare	Shannon Estuary	15	7^{[n 4]}	9	0		52°40′56.85″N8°55′13.63″W / 52.6824583°N 8.9204528°W /52.6824583; -8.9204528	R457591	[96]	7410
Dernish Island		Clare	Shannon Estuary	8^{[n 5]}	14^{[n 4]}	11^[47]		Road (no longer an island)	52°40′56.85″N8°55′13.63″W / 52.6824583°N 8.9204528°W /52.6824583; -8.9204528	R378595	[97]	104097
Inishmacnaghtan	Inis Mhic Neachtain	Clare	Fergus Estuary	285	24^{[n 4]}	12^[47]		Road	52°42′28″N8°57′2.65″W / 52.70778°N 8.9507361°W /52.70778; -8.9507361	R359623	[98]	6141
Feenish	Fínis	Clare	Fergus Estuary	177	31^{[n 4]}	19^[47]			52°42′21.64″N8°58′21.75″W / 52.7060111°N 8.9727083°W /52.7060111; -8.9727083	R343620	[99]	6139
Deenish Island	^{[n 13]}	Clare	Fergus Estuary	44^{[n 5]}	28^{[n 4]}	13^[47]			52°42′59.83″N8°57′53.94″W / 52.7166194°N 8.9649833°W /52.7166194; -8.9649833	R351631	[100]	6153
Horse Island		Clare	Fergus Estuary	34	8^{[n 4]}	13^[48]			52°44′47.04″N9°1′47.54″W / 52.7464000°N 9.0298722°W /52.7464000; -9.0298722	R301667	[101]	7021
Inishmore orDeer Island	Inis Mór	Clare	Fergus Estuary	444	36	133	0	None	52°42′51.13″N9°2′4.73″W / 52.7142028°N 9.0346472°W /52.7142028; -9.0346472	R300630	[102]	6879
Coney Island	Oileán na gCoiníní	Clare	Fergus Estuary	245	44	145	0	None	52°42′38.03″N9°0′28.32″W / 52.7105639°N 9.0078667°W /52.7105639; -9.0078667	R321626	[103]	6923
Inishmacowney	Inis Mhic Uaithne	Clare	Fergus Estuary	225	≥20^{[n 14]}	142	0	None	52°41′2.66″N9°2′53.57″W / 52.6840722°N 9.0482139°W /52.6840722; -9.0482139	R290596	[104]	6929
Canon Island	Oileán na gCanánach	Clare	Shannon Estuary	271	28^{[n 4]}	54	0		52°40′N9°23′W / 52.667°N 9.383°W /52.667; -9.383 (Canon Island)	R2959	[105]	1166545
Inishloe	Inis Lua	Clare	Shannon Estuary	131	13	114	0		52°40′38.17″N9°1′14.67″W / 52.6772694°N 9.0207417°W /52.6772694; -9.0207417	R310588	[106]	6969
Inishtubbrid	Inis Tiobrad	Clare	Shannon Estuary	85	33	0	0	None	52°40′8.05″N9°3′57.53″W / 52.6689028°N 9.0659806°W /52.6689028; -9.0659806	R279579	[107]	6971
Inishcorker	Inis Corcair	Clare	Shannon Estuary	207	31	7	0	Road bridge	52°40′38.17″N9°1′14.67″W / 52.6772694°N 9.0207417°W /52.6772694; -9.0207417	R264579	[108]	6968
Inishbig, or Hog Island	^{[n 15]}	Clare	Shannon Estuary	43	14	8			52°37′13.59″N9°30′0.4″W / 52.6204417°N 9.500111°W /52.6204417; -9.500111	Q9752	[109]	7205
Scattery Island	Inis Cathaigh	Clare	Shannon Estuary	179	14	65	0		52°37′21.8″N9°6′45.1″W / 52.622722°N 9.112528°W /52.622722; -9.112528	Q9752	[110]	7214
Mutton Island	Oileán Caorach	Clare	Atlantic Ocean	159	28	0	0	None	52°48′45.11″N9°31′26.76″W / 52.8125306°N 9.5241000°W /52.8125306; -9.5241000	Q9775	[111]	1166533
Aughinish	Eachinis	Clare	Galway Bay	369	23^{[n 4]}	342^[49]	52	Road (tombolo)	53°5′24″N9°2′24″W / 53.09000°N 9.04000°W /53.09000; -9.04000 (Aughinish)	M2813	[112]	1166074
Inisheer or Inishere	Inis Oírr	Galway	Aran Islands	1400	57	456	343	Air fromInverin; passenger ferries fromRossaveal, and seasonally fromGalway and Roadford nearDoolin	53°3′29″N9°31′39″W / 53.05806°N 9.52750°W /53.05806; -9.52750 (Inisheer)	L9802	[113]	18684
Inishmaan	Inis Meáin	Galway	Aran Islands	2252	79	473	184	Air fromInverin; passenger ferries fromRossaveal, and seasonally fromGalway and Roadford nearDoolin	53°5′N9°35′W / 53.083°N 9.583°W /53.083; -9.583 (Inishmaan)	L9405	[114]	937
Inishmore	Árainn	Galway	Aran Islands	7635^[50]	123	2592	820	Air fromInverin; passenger ferries fromRossaveal, and seasonally fromGalway and Roadford nearDoolin	53°7′25″N9°43′39″W / 53.12361°N 9.72750°W /53.12361; -9.72750 (Inishmore)	L8509	[115]	938
Brannock Island East	Árainn	Galway	Aran Islands						53°8′14.66″N9°49′49.49″W / 53.1374056°N 9.8304139°W /53.1374056; -9.8304139
Brannock Island Middle	Árainn	Galway	Aran Islands						53°8′26.3″N9°50′29.97″W / 53.140639°N 9.8416583°W /53.140639; -9.8416583
Brannock Island South	Árainn	Galway	Aran Islands						53°8′29.45″N9°50′53.76″W / 53.1415139°N 9.8482667°W /53.1415139; -9.8482667
Brannock Island	Árainn	Galway	Aran Islands						53°8′40.57″N9°50′23.48″W / 53.1446028°N 9.8398556°W /53.1446028; -9.8398556
Rock Island	Árainn	Galway	Aran Islands						53°8′50.39″N9°51′26.83″W / 53.1473306°N 9.8574528°W /53.1473306; -9.8574528
Island Eddy	Oileán Eide	Galway	Galway Bay	138	8	125	2	None	53°12′N8°59′W / 53.200°N 8.983°W /53.200; -8.983 (Island Eddy)	M339164	[116]	18613
Tawin East	Tamhain Thoir	Galway	Galway Bay	<179^{[n 16]}		≤193^[51]		Road	53°13′10.43″N9°0′52.29″W / 53.2195639°N 9.0145250°W /53.2195639; -9.0145250	M3219	[117]	1166796
Tawin Island	Tamhain	Galway	Galway Bay	>218^{[n 16]}	6	≥108^[51]		Road via Tawin East	53°13′7.89″N9°2′12.57″W / 53.2188583°N 9.0368250°W /53.2188583; -9.0368250	M3119	[118]	18504
Rossroe Island	An Ros	Galway	Greatman's Bay	58	14^{[n 4]}	7	12	Road bridge	53°17′11.83″N9°36′18.28″W / 53.2866194°N 9.6050778°W /53.2866194; -9.6050778	L928275	[119]	20704
Inchamakinna	Inis Mhic Cionaith	Galway	Greatman's Bay	109	18^{[n 4]}	41	0	None		L920267	[120]	20702
Annaghvaan	Eanach Mheáin	Galway	Gorumna group	311	15	125	140	Road bridge	53°18′51.17″N9°38′26.2″W / 53.3142139°N 9.640611°W /53.3142139; -9.640611	L9131	[121]	20803
Inishlusk	Inis Loiscthe	Galway	Gorumna group	13	8^{[n 4]}	24^[52]				L898303	[122]	20814
Lettermore	Leitir Móir	Galway	Gorumna group	2254	117	844	542	Road bridge via Annaghvaan	53°17′51.72″N9°40′4.46″W / 53.2977000°N 9.6679056°W /53.2977000; -9.6679056	L8829	[123]	20818
Gorumna	Garmna	Galway	Gorumna group	5871	53	1910	1044	Road bridge via Lettermore	53°15′0″N9°40′48″W / 53.25000°N 9.68000°W /53.25000; -9.68000 (Gorumna)	L8824	[124]	1166158
Lettermullen or Lettermullan	Leitir Mealláin	Galway	Gorumna group	787	45	587	214	Road bridge via Gorumna	53°14′38″N9°43′34″W / 53.24389°N 9.72611°W /53.24389; -9.72611 (Lettermullen)	L8423	[125]	20728
Crappagh Island	an Cnapach	Galway	Gorumna group	118	16	53^[53]	0	Road bridge via Lettermullen	53°14′31.31″N9°45′4.91″W / 53.2420306°N 9.7513639°W /53.2420306; -9.7513639	L8323	[126]	20720
Furnace Island	Fornais	Galway	Gorumna group	219	27	155	66	Road bridge via Lettermullen	53°15′18.27″N9°44′32.47″W / 53.2550750°N 9.7423528°W /53.2550750; -9.7423528	L8424	[127]	20724
Inisherk	Inis Eirc	Galway	Gorumna group	64	27	49	0		53°14′58.12″N9°45′10.17″W / 53.2494778°N 9.7528250°W /53.2494778; -9.7528250	L829235	[128]	20727
Dinish Island	Daighinis	Galway	Gorumna group	95	19	59^[53]	0		53°15′44.52″N9°45′14.18″W / 53.2623667°N 9.7539389°W /53.2623667; -9.7539389	L828250	[129]	20721
Inishbarra	Inis Bearachain	Galway	Gorumna group	262	37	205	0			L8627	[130]	20813
Illauneeragh	an tOileán Iatharach	Galway	Gorumna group	90	21	15	0			L842270	[131]	20809
Inishtravin	Inis Treabhair	Galway	Kilkieran Bay	190	14	93	0	None		L885311	[132]	18158
Clynagh Island	Cladhnach	Galway	Camus Bay	103	15	0	0	None		L953272	[133]	20706
Inisheltia	Inis Aillte	Galway	Camus Bay	67	12	0	0	None		L938347	[134]	20931
Roeillaun	Rua-oileáin	Galway	Kilkieran Bay	3		17	0	None		L681591	[135]	18341
Illaunmore	an tOileán Mór	Galway	Kilkieran Bay	96	14	89	1	None		L897349	[136]	1398093
Illauneeragh West	an tOileán Iarthach Thiar	Galway	Kilkieran Bay	78	15	65	0			L886347	[137]	20928
Finish Island	Fínis	Galway	Maínis Bay	154	8	66	0	Tombolo		L7929	[138]	1166125
Rusheennacholla	Roisín an Chalaidh	Galway	Maínis Bay	79	10^{[n 4]}	53	12	Road		L776305	[139]	18278
Mweenish Island	Maínis	Galway	Maínis Bay	572	23	649	127	Road via Rusheennacholla	53°18′01″N9°52′35″W / 53.30028°N 9.87639°W /53.30028; -9.87639 (Mweenish Island)	L7629	[140]	1166448
Masson Island or Mason Island	Oileán Máisean	Galway	Atlantic Ocean	92	14	98	0			L7429	[141]	1166541
St Macdara's Island	Cruach na Cara	Galway	Atlantic Ocean	61	27	9^[54]	0			L719302	[142]	18280
Croaghnakeela Island	Cruach na Caoile	Galway	Atlantic Ocean	141	63	0	0			L6933	[143]	1165930
Freaghillaun	Fraochoileán	Galway	Atlantic Ocean	39	30^{[n 4]}					L732351	[144]	18262
Illaungorm North	An tOileán Gorm Thuaidh	Galway	Bertraghboy Bay	33	5	3^[55]	0	None		L7856639789	[145]	18313
Inishnee	Inis Ní	Galway	Bertraghboy Bay	856	48^{[n 4]}	455	49	Road	53°23′56″N9°53′49″W / 53.39889°N 9.89694°W /53.39889; -9.89694 (Inishnee)	L7441	[146]	18353
Inishlackan	Inis Leacan	Galway	Gorteen Bay	129	13	126	0			L717375	[147]	18352
Inishdawros	Inis Damhraí	Galway	Ballyconneely Bay	22	3	8^[56]	0	None		L642409	[148]	18090
Illaunamid	Oileán Imill	Galway	Atlantic Ocean	29	27^{[n 4]}	30^[57]	0			L517410	[149]	18192
Turbot Island, Talbot Island, or Inish Toirbirt	Tairbeart	Galway	Atlantic Ocean	148	13	146	2	None	53°30′2.63″N10°8′59.42″W / 53.5007306°N 10.1498389°W /53.5007306; -10.1498389 (Turbot Island)	L574522	[150]	18142
Inishturk orInishturk South	Inis Toirc Theas	Galway	Atlantic Ocean	133	37	84	0	None	53°30′32″N10°8′59″W / 53.50889°N 10.14972°W /53.50889; -10.14972 (Inishturk South)	L5753	[151]	1166271
Omey Island	Iomaí	Galway	Atlantic Ocean	522	28	397	5		53°32′7″N10°9′27″W / 53.53528°N 10.15750°W /53.53528; -10.15750 (Omey Island)	L5755	[152]	1166277
Cruagh Island	an Chruach	Galway	Atlantic Ocean	83	62^{[n 4]}	0	0			L5355	[153]	18367
High Island	Ardoileán	Galway	Atlantic Ocean	82	63^{[n 4]}	0	0		53°32′47″N10°15′25″W / 53.54639°N 10.25694°W /53.54639; -10.25694 (Ardoileán)	L5057	[154]	18376
Inishbofin	Inis Bó Finne	Galway	Atlantic Ocean	3151^[58]	89	1404	184	Passenger ferry fromCleggan	53°37′N10°12′W / 53.617°N 10.200°W /53.617; -10.200 (Inishbofin)	L5565	[155]	18238
Inishlyon	Inis Laighean	Galway	Atlantic Ocean	75	43	0	0			L566646	[156]	18241
Inishark or Inishshark	Inis Airc	Galway	Atlantic Ocean	581	100	208	0		53°36′42″N10°16′58″W / 53.61167°N 10.28278°W /53.61167; -10.28278 (Inishark)	L5067	[157]	1166239
Davillaun	Damhoileán	Galway	Inishbofin group	60	28^{[n 4]}	0	0			L587663	[158]	18234
Crump Island	Oileán Dá Chruinne	Galway	Atlantic Ocean	63	25	16	0			L6865	[159]	18144
Inishturk	Inis Toirc	Mayo	Atlantic Ocean	1446	191	577	56	Passenger ferry from Roonah Quay, beyondLouisburgh	53°42′5″N10°6′30″W / 53.70139°N 10.10833°W /53.70139; -10.10833 (Inishturk)	L6174	[160]	1375327
Caher Island	Oileán na Cathrach	Mayo	Atlantic Ocean	128	61^{[n 4]}	0	0		53°43′3″N10°1′38″W / 53.71750°N 10.02722°W /53.71750; -10.02722 (Caher Island)	L6676	[161]	1166544 Archived 14 August 2012 at theWayback Machine
Clare Island	Cliara	Mayo	Clew Bay	3949	462 (Knockmore)	1615	138	Passenger ferry from Roonah Quay, beyondLouisburgh	53°48′18″N9°59′37″W / 53.80500°N 9.99361°W /53.80500; -9.99361 (Clare Island)	L6885	[162]	36982
Dorinish (Dorinish More and Dorinish Beg)	Deoirinis	Mayo	Clew Bay	15^{[n 17]}	25	13	0		53°48′45″N9°40′18″W / 53.81250°N 9.67167°W /53.81250; -9.67167 (Dorinish)	L900858	[163]	37268^{[permanent dead link]}
Inisheeny	Inis Aonaigh	Mayo	Westport Bay	26	22	36^[59]				L920845	[164]	37323
Inishraher	Inis Raithir	Mayo	Westport Bay	27	33	25	0			L925852	[165]	37291
Annagh Islands		Mayo	Westport Bay	48 (East) 12 (Middle) 17 (West)	9^{[n 4]} (East) 6 (West)	33 (total)^[60]				L948833	[166]	114009
Illanataggart	Oileán an tSagairt	Mayo	Clew Bay	30	28	33	0			L928868	[167]	37275
Crovinish	Croibhinis	Mayo	Dorinish Harbour	29	23	32^[59]				L918866	[168]	37260
Inishlyre	Inis Ladhair	Mayo	Dorinish Harbour	52	26	113	3			L912873	[169]	37288
Inishgort	Inis Goirt	Mayo	Clew Bay	28	29	32	0			L902879	[170]	37281
Collanmore Island or Collan More Island	Collainn Mhór	Mayo	Clew Bay	197	53^{[n 4]}	213	5			L920882	[171]	37253
Clynish	Claidhnis	Mayo	Clew Bay	80	42	87	3			L923894	[172]	37251
Island More	an tOileán Mór	Mayo	Clew Bay	77	42	88	3	^{[n 18]}		L903893	[173]	37293
Knockycahillaun	Cnoc Uí Chathaláin	Mayo	Clew Bay	34	36	41	0	None^{[n 18]}		L910896	[174]	37298
Derrinish	Dairinis	Mayo	Newport Bay	30	21	40^[59]				L913902	[175]	37262
Inishbee		Mayo	Newport Bay	38	29	20^[59]				L901902	[176]	37279
Inishgowla	Inis Gabhla	Mayo	Newport Bay	32	28	52^[59]				L911911	[177]	37282
Inishoo	Inis Uamha	Mayo	Newport Bay	17	29	29^[59]				L901911	[178]	37290
Inishnakillew	Inis na Coilleadh	Mayo	Newport Bay	59	27	126	5	Causeway		L937902	[179]	37289
Inishcottle	Inis Cotail	Mayo	Newport Bay	24	26	40	3	Causeway via Inishnakillew		L928905	[180]	37280
Inishturk	Inis Toirc	Mayo	Newport Bay	59	51	577^[59]	56			L940909	[181]	37292
Inishdaff	Inis Damh	Mayo	Newport Bay	33	31	44^[61]				L948914	[182]	37099
Rosbarnagh Island	Oileán Ros Bairneach	Mayo	Newport Bay	53	37	42^[61]		Road bridge		L953926	[183]	37089
Inishturlin		Mayo	Newport Bay	21	27	25^[61]				L947931	[184]	37079
Rosmore Island	An Ros Mór	Mayo	Newport Bay	104^{[n 19]}	28	133^{[n 19]}^[62]		Road bridge		L961942	[185]	37436
Rosturk Island	Ros Toirc	Mayo	Newport Bay	34	24	64^[63]		Connected at low tide		L913946	[186]	37494
Inishquirk	Inis Coirce	Mayo	Newport Bay	28	44	37^[63]				L904943	[187]	37472
Inishtubbrid		Mayo	Newport Bay	37	28	42^[63]				L897947	[188]	37473
Inishnacross	Inis na Croise	Mayo	Newport Bay	26	36	27^[63]				L888941	[189]	37471
Inishbobunnan		Mayo	Newport Bay	24	31	13^[63]				L889954	[190]	37459
Inishgowla		Mayo	Newport Bay	32	32	28^[63]				L887950	[191]	37467
Inishilra		Mayo	Newport Bay	8	18	12^[63]				L895939	[192]	37468
Inishkeel	Inis Caol	Mayo	Newport Bay	30	27	23^[63]				L878953	[193]	37469
Inisherkin	Inis Earcáin	Mayo	Newport Bay	31	30	28^[63]				L878945	[194]	37466
Inishcooa		Mayo	Newport Bay	21	27	6^[63]				L876938	[195]	37461
Moynish More	Maínis Mór	Mayo	Clew Bay	62	37	99^[63]				L864945	[196]	37481
Achill Island	Acaill	Mayo	Atlantic Ocean	35283^[64]	688 (Croaghaun)	4901	2345	Road bridge (Michael Davitt Bridge)	54°N10°W / 54°N 10°W /54; -10 (Achill Island)	F6803	[197]	1165355
Achillbeg	Acaill Bheag	Mayo	Atlantic Ocean	331	110	178	1		53°51′N9°57′W / 53.850°N 9.950°W /53.850; -9.950 (Achillbeg)	L7292	[198]	1165356
Annagh Island	Oileán an Eanaigh	Mayo	Blacksod Bay	627	23	0^{[n 20]}	0			F778052	[199]	36937
Inishbiggle	Inis Bigil	Mayo	Blacksod Bay	637	34	67	12		53°59′45″N9°54′15″W / 53.99583°N 9.90417°W /53.99583; -9.90417 (Inishbiggle)	F7507	[200]	36863
Barranagh Island	Oileán Bearanach	Mayo	Elly Bay	63	7	0	0	Tombolo		F667258	[201]	35255
Duvillaun Beg	Dubhoileán Beag	Mayo	Atlantic Ocean	25	14	0	0			F5916	[202]	35271
Duvillaun More	Dubhoileán Mór	Mayo	Atlantic Ocean	155	60	31	0			F5816	[203]	35272
Inishkea South	Inis Gé Theas	Mayo	Inishkea Islands	344	72 (Knocknaskea)	62^[65]	0			F5420	[204]	35278
Inishkea North	Inis Gé Thuaidh	Mayo	Inishkea Islands	464	24	155^[65]	0			F5623	[205]	35277
Inishglora	Inis Gluaire	Mayo	Atlantic Ocean	37	22	16^[65]	0		54°12′31″N10°7′38″W / 54.20861°N 10.12722°W /54.20861; -10.12722 (Inishglora)	F6131	[206]	1166254 Archived 20 August 2012 at theWayback Machine
Eagle Island	Oileán sa Tuaidh	Mayo	Atlantic Ocean	14	60	15	0			F6339	[207]	1166546 Archived 20 August 2012 at theWayback Machine
Kid Island	Oileán Mionnán	Mayo	Broadhaven Bay	25	86	0	0			F787436	[208]	35405
Illanmaster	Oileán Máistir	Mayo	Atlantic Ocean	7	108^{[n 4]}	0	0	None	54°20′N9°38′W / 54.333°N 9.633°W /54.333; -9.633 (Illanmaster)	F934432	[209]	1399573
Bartragh Island	an Bheartrach	Mayo	Killala Bay	316	26	28	0	None	54°12′50″N9°9′47″W / 54.21389°N 9.16306°W /54.21389; -9.16306 (Bartragh)	G245300	[210]	34513
Inishmulclohy orConey Island	Inis Uí Mhaolchluiche	Sligo	Sligo Harbour	388	13	124	1	Connected by strand at low tide		G617388	[211]	45348
Oyster Island	Inis Rórais	Sligo	Sligo Harbour	33	14^{[n 4]}	28	0			G631393	[212]	45365
Inishmurray	Inis Muirígh	Sligo	Donegal Bay	209	23^{[n 4]}	0	0		54°26′N8°40′W / 54.433°N 8.667°W /54.433; -8.667 (Inishmurray)	G572539	[213]	45211
Conor's Island	Oileán Chonchúir	Sligo	Donegal Bay	111^{[n 5]}	16^{[n 4]}	15	0	Road (no longer an island)		F654515	[214]	45206
Dernish	Dairinis	Sligo	Donegal Bay	103	32	42	0			G677528	[215]	45207
Inishpat		Donegal	Donegal Harbour	17	25	7^[66]				F591874	[216]	14142
Rooney's Island	Oileán Uí Ruanaí	Donegal	Donegal Harbour	34	32^{[n 4]}	6^[67]				F591875	[217]	14297
Rotten Island	an tOileán Bréan	Donegal	Killybegs Harbour	1		11	0		54°36′52.13″N8°26′25.55″W / 54.6144806°N 8.4404306°W /54.6144806; -8.4404306	F715742	[218]	14875
Rathlin O'Birne Island	Reachlainn Uí Bhirn	Donegal	Atlantic Ocean	50^{[n 21]}	26	0	0			G4680	[219]	1166602
Inishkeel	Inis Caoil	Donegal	Gweebarra Bay	81	19	16^[68]	0	Connected by strand at low tide	54°50′51″N8°27′22″W / 54.84750°N 8.45611°W /54.84750; -8.45611 (Inishkeel)	B7000	[220]	1166244
Inishkeeragh	Inis Caorach	Donegal	Atlantic Ocean	47	6	52	0			B683123	[221]	14535
Inishfree Upper	Inis Fraoigh	Donegal	Dunglow Bay	541	14	137	9		54°57′20″N8°26′40″W / 54.95556°N 8.44444°W /54.95556; -8.44444 (Rutland Island)	B715120	[222]	14945
Inishal	Inis Saille	Donegal	Dunglow Bay	71	6	43^[69]				B727113	[223]	14943
Rutland Island or Inishmacadurn	Inis Mhic an Doirn	Donegal	Atlantic Ocean	313	≥20	125	12		54°58′41″N8°27′27″W / 54.97806°N 8.45750°W /54.97806; -8.45750 (Rutland Island)	B707142	[224]	15002
Inishcoo	Inis Cú	Donegal	Atlantic Ocean	109	15		0	None.^{[n 22]}	54°59′13″N8°27′50″W / 54.98694°N 8.46389°W /54.98694; -8.46389 (Inishcoo)	B706156	[225]	15000
Eighter Island	an tÍochtar	Donegal	Atlantic Ocean	60	24	59	0	None^{[n 22]}	54°59′30″N8°28′27″W / 54.99167°N 8.47417°W /54.99167; -8.47417 (Eighter Island)	B698161	[226]	14997
Arranmore or Aran Island	Árainn Mhór	Donegal	Atlantic Ocean	4335^[70]	227	1431	478	Car ferry toBurtonport	54°59′22″N8°31′51″W / 54.98944°N 8.53083°W /54.98944; -8.53083 (Arranmore)	B6616	[227]	14527
Cruit Island	an Chruit	Donegal	Rosses Bay	941	32	258	92	Road bridge	55°3′3″N8°14′8″W / 55.05083°N 8.23556°W /55.05083; -8.23556 (Cruit Island)	B7321	[228]	111107
Owey Island	Uaigh	Donegal	Rosses Bay	301	102	94	27		55°3′17″N8°27′3″W / 55.05472°N 8.45083°W /55.05472; -8.45083 (Owey Island)	B712231	[229]	15013
Inishfree Lower	Inis Fraoigh	Donegal	Inishfree Bay	45	25	0	0			B756241	[230]	14514
Inishinny	Inis Sionnaigh	Donegal	Gweedore Bay	62	27	4^[71]	0			B785252	[231]	1390473
Gola Island	Gabhla	Donegal	Gweedore Bay	424	68	68	15		55°3′3″N8°14′8″W / 55.05083°N 8.23556°W /55.05083; -8.23556 (Gola Island)	B7727	[232]	14467
Inishmeane	Inis Meáin	Donegal	Gweedore Bay	117	33	12	0		55°06′15.65″N8°20′46.04″W / 55.1043472°N 8.3461222°W /55.1043472; -8.3461222 (Inishmeane)	B785286	[233]	14495
Inishsirrer	Inis Oirthir	Donegal	Gweedore Bay	109	23	0^{[n 23]}	0		55°07′04″N8°20′36″W / 55.11778°N 8.34333°W /55.11778; -8.34333 (Inishsirrer)	B7830	[234]	1166267
Inishbofin	Inis Bó Finne	Donegal	Tory Sound	298	33	121	16		55°10′24″N8°10′8″W / 55.17333°N 8.16889°W /55.17333; -8.16889 (Inishbofin)	B889365	[235]	14448
Inishdooey	Oileán Dúiche	Donegal	Tory Sound	87	38	9^[72]			55°11′24″N8°9′50″W / 55.19000°N 8.16389°W /55.19000; -8.16389 (Inishdooey)	B896383	[236]	14449
Tory Island	Toraigh	Donegal	Atlantic Ocean	785	83	399	141	Passenger ferries toBunbeg and Meenlaragh nearFalcarragh	55°15′45″N8°13′0″W / 55.26250°N 8.21667°W /55.26250; -8.21667 (Tory Island)	B851465	[237]	14500
Island Roy	Oileán an Bhráighe	Donegal	Mulroy Bay	91	12^{[n 4]}	74	13	Road causeway		C133381	[238]	16063
Aughnish		Donegal	Lough Swilly	66	25	26	3	Road causeway		C252215	[239]	15974
Inch Island	an Inis	Donegal	Lough Swilly	3425^[73]	222	978^[74]	438^[73]	Road causeways	55°04′08″N7°29′18″W / 55.06889°N 7.48833°W /55.06889; -7.48833 (Inch Island)	C3324	[240]	1166237
Inishtrahull	Inis Trá Tholl	Donegal	Atlantic Ocean	113	49	54	0		55°25′48″N7°14′2″W / 55.43000°N 7.23389°W /55.43000; -7.23389 (Inishtrahull)	C4565	[241]	14546

Notes

^Taken from thePlacenames Database of Ireland entry linked in the PDI ref column
^Unless stated otherwise, area is fromOrdnance Survey Ireland's 19th-century 6" maps (viewable via the Historic 6" layer of the link in the OS-map column)
^Unless stated otherwise, height is from Ordnance Survey Ireland's 1:50,000 series maps (viewable for Republic of Ireland islands via the Wind Report layer of the link in the OS-map column )
^^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al ^am ^an ^ao ^ap ^aq ^ar ^as ^at ^au ^av ^aw ^ax ^ay ^azConverted from height in feet given onOrdnance Survey Ireland's 19th-century 6" maps (viewable via the Historic 6" layer of the link in the OS-map column)
^^a ^b ^c ^d ^e ^f19th-century area, before reclamation
^^a ^bCombined total of Dunkerron Island East and Dunkerron Island West.^[37]
^^a ^bDunkerron Island East and West are connected at low tide.
^^a ^b ^cCappanacush is the largest of the Greenane Islands. It is listed separately and its area and population are excluded from the totals. It constitutes a separatetownland.
^170 in 1851
^ Not enumerated separately from Rossdoohan townland on the mainland; combined population 163.^[40]
^11 in 1911
^13 in 1881
^Duínis on OSI 1:50,000 map
^The maximumspot height of 24 feet on the 6" map is incompatible with the 20-metre contour line present on the 1:50,000 map.
^Inis Bhig on OSI 1:50,000 map
^^a ^bTawin Island comprise the townland of Tawin West (218 acres (88 hectares), 108 people) and part of the townland of Tawin East (179 acres (72 hectares), 193 people). Tawin East Island comprises the balance of the townland of Tawin East.
^Excluding the tombolo linking Dorinish More and Dorinish Beg
^^a ^bIsland More and Knockycahillaun are now connected;
^^a ^bComprising townlands of Rosmore (78 acres (32 hectares), 90 people) and Lisduff (27 acre, 43 people)
^18 in 1851
^Excluding the 10 acres (4.0 hectares) of Kinkeel, connected at low tide.
^^a ^bThere is a foot bridge between Eighter and Inishcoo.
^30 in 1861

References

[edit]

The Parliamentary Gazetteer of Ireland adapted to the new Poor-Law, Franchise, Municipal and Ecclesiastical arrangements ... as existing in 1844–45. Dublin: A. Fullarton & Co. 1846.Vol. I: A–C,Vol. II: D–M,Vol. III: N–Z
Reports of the Commissioners for inquiring into the number and boundaries of poor-law unions and electoral divisions in Ireland. Parliamentary Reports from Commissioners. Vol. 7 (26 ed.). 1850.2nd, No.1145,3rd, No.1146,4th, No.1147,5th, No.1148, 6th, No.1149 (PDFs:pp.1–7 pp.8–40),7th, No.1155,8th, No.1199,9th, No.1191,10th, No.1223,11th, No.1257,12th, No.1266,13th, No.1277,14th, No.1278
"Table 6: Population and area of each Province, County, City, urban area, rural area and Electoral Division, 2002 and 2006"(PDF).2006 Census, Volume 1.Central Statistics Office. 2007.

^Ptolemy,Geog., Bk. 2, Ch. 1 & 2.
^Population of Inhabited Islands Off the Coast (Report). Central Statistics Office. 2023. Retrieved29 June 2023.
^2011 Census gives 6500 for Cobh Town and 7534 for Cobh Rural ED; most were on Great Island but 148 were on Haulbowline and some on Fota Island.
^^a ^bUnless stated otherwise, populations are fromPopulation (Number) by Off Shore Island, Year and Sex Central Statistics Office
^"Area Measurements in Northern Ireland". Northern Ireland Statistics and Research Agency. 12 April 2006. Archived fromthe original on 17 June 2007. Retrieved11 September 2010.
^Elwood, J. H. (Winter 1968)."The population of Rathlin Island".Ulster Medical Journal.37 (1):64–70.PMC 2384959.PMID 5656183.
^"Census 2021".^{[permanent dead link]}
^"Maidens".Commissioners of Irish Lights. Retrieved16 October 2010.
^Commissioners14th Rpt, p.45 Bangor E. Division
^"Aids to Navigation Review 2010–2015". General Lighthouse Authorities of the United Kingdom and Ireland. 2010. p. 103. Archived fromthe original on 4 June 2012. Retrieved18 September 2010.
^Commissioners14th Rpt, p.44 Grey Abbey E Division
^Commissioners14th Rpt, p.46 Comber E Division
^"Island Hill & North Strangford Nature Reserve".Walk NI. Countryside Access & Activities Network. Archived fromthe original on 3 June 2013. Retrieved16 October 2010.
^^a ^b ^c ^d ^e ^fCommissioners14th Rpt, p.47 Tullynakill E Division
^^a ^b ^c ^dCommissioners14th Rpt, p.42–3 Killinchy E Division
^^a ^b ^cCommissioners14th Rpt, p.43 Killyleagh E Division
^^a ^b ^cCommissioners14th Rpt, p.44 Ranolf E Division
^^a ^b ^cCommissioners,12th R, p.54 Skerries E Division
^Commissioners14th Rpt, p.22 Howth E Division
^"The Bull Island Nature Reserve".Clontarf Online. Retrieved12 October 2010.the area above high tide is approximately 300 hectares
^Commissioners14th Rpt, p.14 Killiney E Division
^^a ^b ^c ^dCommissioners9th Report, p.8 South Cork Union, Queenstown E. Division. The Great Island area and population are those of the total ED (7,012 acres (2,838 hectares), 10060 people) less those of Foaty, Haulbowline, Spike, Rocky, and Coney Islands (897 acres (363 hectares), 636 people)
^2006 Census Vol.1 Table 6 gives 6541 forCobh town and 6339 for Cobhrural ED; most were on Great Island but 165 were on Haulbowline and some onFota Island.
^"Background Information"(PDF). Dept of the Environment. pp. 23–4. Archived fromthe original(PDF) on 3 September 2013. Retrieved20 September 2010.It may therefore be concluded that the area of the island was 23.5 ha when steel processing started in 1938 and 34.9 ha when production ceased in 2001
^Commissioners2nd Rpt, p.17 Myross E Division
^Commissioners2nd Rpt, p.15 Cape Clear E Division
^Commissioners2nd Rpt, p.19 Kilcoe E Division
^^a ^b ^cCommissioners,2nd Rpt, p.14 Aghadown South E Division
^^a ^bCommissioners,2nd Rpt, p.19 Skull E Division
^Commissioners2nd Rpt, p.18 Ballydehob E Division
^Including Chapel Island Little
^Commissioners,3rd Rpt, p.6 Whiddy E Division
^^a ^bCommissionersThird Rept, p.7 Bere E Division (excludingFourteen Islands)
^"Inis Fearn Ard".Placenames Database of Ireland.Dublin City University. Retrieved9 July 2016.
^CommissionersThird Rept, p.8 Kilcatherine E Division
^Commissioners 6th Rpt, p.39 Dawros E. Division
^Commissioners 6th Rpt, p.40 Reen E. Division
^Commissioners 6th Rpt, p.39 Dromore E. Division
^^a ^bCommissioners 6th Rpt, p.39 Greenane E. Division
^Commissioners 6th Rpt, p.40 Tahilla E. Division
^Commissioners 6th Rpt, p.39 Castlecove E. Division
^^a ^bCommissioners8th Rpt p.29
^^a ^b ^cCommissioners8th Rpt, p.12 Dunquin E Division
^Commissioners8th Rpt, p.22 Ballynanaglish E Division
^Commissioners8th Rpt, p.45 Shanagolden E Division
^Commissioners8th Rpt, p.34 Aughinish E Division (Aughinish East and Aughinish West)
^^a ^b ^c ^dCommissioners7th Rpt, p.4 Clenagh E Division
^Commissioners7th Rpt, p.21 Lisheen E Division
^Commissioners7th Rpt, p.26 Doorus E Division
^Parl Gazz IrlVol.1 p.86
^^a ^bCommissioners7th Rpt, p.17 Ballynacourty E Division
^Commissioners4th Rpt, p.21 Lettermore E. Division
^^a ^bCommissioners4th Rpt, p.21 Gorumna E. Division
^Commissioners 6th Rpt, p.10 Knockboy E. Division
^Commissioners 6th Rpt, p.10 Owengowla E. Division
^Commissioners 6th Rpt, p.9 Bunowen E. Division
^Commissioners 6th Rpt, p.10 Doonloughan E. Division
^Parl Gazz IrlVol.3 p.316
^^a ^b ^c ^d ^e ^f ^gCommissioners4th Rpt, p.12 Kilmeena E Division
^Commissioners4th Rpt, p.11 Croaghpatrick E Division
^^a ^b ^cCommissioners4th Rpt, p.14 Derryloughan E Division
^Commissioners4th Rpt, p.15 Newport East E Division
^^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^kCommissioners4th Rpt, p.15 Newport West E Division
^Parl Gazz IrlVol.1 p.8
^^a ^b ^cCommissionersSecond report, p.11 Binghamstown South E D
^Commissioners5th Rpt, p.14 Laghy E Division
^Commissioners5th Rpt, p.14 Tullynaught E Division
^Commissioners5th Rpt, p.17 Maas E Division
^Commissioners5th Rpt, p.17 Maghery E Division
^Parl Gazz IrlVol.1 p.87
^Commissioners11th Rpt, p.8 Gweedore E Division
^Commissioners11th Rpt, p.8 Meenaclady E Division
^^a ^b2006 Census, Vol.1 Table 6, p.116
^Commissioners14th Rpt, p.61 Inch E Division

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