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List of counties in Oregon

From Wikipedia, the free encyclopedia

Counties of Oregon
MLH BKR WL UNI UMA MR GRANT HARNEY LAKE KL DC CROOK JEFF WH GL SH WS HR MULT CK MN LINN LANE DOUG JC JO CU CS BE LC PK YM TL WA CO CL
Location	State of Oregon
Number	36
Populations	1,456 (Wheeler) – 795,897 (Multnomah)^[1]
Areas	435 square miles (1,130 km²) (Multnomah) – 10,135 square miles (26,250 km²) (Harney)
Government	County government
Subdivisions	Cities, townships, unincorporated communities, Indian reservations,census-designated places

There are 36counties in theU.S. State ofOregon. TheOregon Constitution does not explicitly provide forcounty seats; Article VI, covering the "Administrative Department" of the state ofOregon, simply states that:

All county and city officers shall keep their respective offices at such places therein, and perform such duties, as may be prescribed by law.^[2]

More details on the etymologies of Oregoncounty names and place names in general are documented inOregon Geographic Names. Oregon'spostal abbreviation isOR and itsFIPS state code is41.

Oregon counties by date of establishment
  1840–1849
  1850–1859
  1860–1869
  1870–1889
  After 1890

County information

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TheFederal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify counties, is provided with each entry. The FIPS code for each county links to census data for that county.


County	FIPS code [3]	County seat^[4]	Est.[4]	Origin^[5]	Etymology^[5]	Population^[6]	Area^[4]
Baker County	001	Baker City	1862	Eastern portion of Wasco County	Named in honor ofEdward Dickinson Baker, who died in combat while serving as Oregon senator.	16,750	3,068 sq mi (7,946 km²)
Benton County	003	Corvallis	1847	Polk County	Named forThomas Hart Benton, senator and advocate of U.S. annexation of theOregon Country.	98,899	676 sq mi (1,751 km²)
Clackamas County	005	Oregon City	1843	One of the original four districts of the Oregon Country	Named for theClackamas people, a local Native American tribe.	425,857	1,868 sq mi (4,838 km²)
Clatsop County	007	Astoria	1844	Northern and western portions of the original Twality District	Named for theClatsop, a local Native American tribe.	41,043	827 sq mi (2,142 km²)
Columbia County	009	Saint Helens	1854	Northern half of Washington County	Named for the neighboringColumbia River.	54,063	657 sq mi (1,702 km²)
Coos County	011	Coquille	1853	Western parts of Umpqua and Jackson Counties	Named for theCoos people, a regional Native American group.	64,326	1,600 sq mi (4,144 km²)
Crook County	013	Prineville	1882	Southern part of Wasco County	Named forGeorge Crook, a Union army officer in theCivil War andIndian Wars.	27,336	2,980 sq mi (7,718 km²)
Curry County	015	Gold Beach	1855	Coos County	Named forGeorge Law Curry, governor of theOregon Territory.	22,774	1,627 sq mi (4,214 km²)
Deschutes County	017	Bend	1916	Southern part of Crook County	Named for theDeschutes River fromFrenchRiviere des Chutes,'River of the falls'.	211,535	3,018 sq mi (7,817 km²)
Douglas County	019	Roseburg	1852	Portion of Umpqua County which lay east of the Coast Range summit	Named for senatorStephen A. Douglas, a supporter of Oregon's admission to the union.	112,255	5,037 sq mi (13,046 km²)
Gilliam County	021	Condon	1885	Eastern third of Wasco County	Named for Oregon pioneerCornelius Gilliam (1798–1848).	1,971	1,204 sq mi (3,118 km²)
Grant County	023	Canyon City	1864	Parts of old Wasco and old Umatilla counties	Named forUlysses S. Grant prior to his election as president, in recognition of his military service.	7,093	4,529 sq mi (11,730 km²)
Harney County	025	Burns	1889	Southern two-thirds of Grant County	Named in honor of cavalry officerWilliam S. Harney.	7,402	10,135 sq mi (26,250 km²)
Hood River County	027	Hood River	1908	Northwest portion of Wasco County	Named for theHood River.	23,764	522 sq mi (1,352 km²)
Jackson County	029	Medford	1852	Southwestern portion of Lane County and unorganized area south of Douglas and Umpqua Counties.	Named for PresidentAndrew Jackson.	221,331	2,785 sq mi (7,213 km²)
Jefferson County	031	Madras	1914	Crook County	Named for the adjacentMount Jefferson, itself named for PresidentThomas Jefferson.	25,536	1,781 sq mi (4,613 km²)
Josephine County	033	Grants Pass	1856	Western half of Jackson County	Named for Virginia "Josephine" Rollins, the first female settler in the area.	88,276	1,640 sq mi (4,248 km²)
Klamath County	035	Klamath Falls	1882	Western part of Lake County	Named for theKlamath people, a local Native American tribe.	70,438	5,945 sq mi (15,397 km²)
Lake County	037	Lakeview	1874	Jackson and Wasco Counties	Named for the large number of local lakes and springs.	8,194	7,940 sq mi (20,565 km²)
Lane County	039	Eugene	1851	Southern part of Linn County and the portion of Benton County east of Umpqua County	Named forJoseph Lane, the first governor of theOregon Territory.	382,396	4,554 sq mi (11,795 km²)
Lincoln County	041	Newport	1893	Western portion of Benton County and Polk County	Named for PresidentAbraham Lincoln.	51,212	980 sq mi (2,538 km²)
Linn County	043	Albany	1847	Southern portion of Champoeg (later Marion) County	Named forLewis F. Linn, sponsor of theDonation Land Act.	132,474	2,291 sq mi (5,934 km²)
Malheur County	045	Vale	1887	Southern portion of Baker County	Named for theMalheur River, itself fromFrenchRiviere au Malheur,'Unfortunate River', named by French fur trappers whose belongings were stolen along the river.	32,315	9,888 sq mi (25,610 km²)
Marion County	047	Salem	1843	One of the original four districts of the Oregon territory	Named forFrancis Marion (1732-1795), aRevolutionary War general.	352,867	1,185 sq mi (3,069 km²)
Morrow County	049	Heppner	1885	Western portion of Umatilla County and a small portion of eastern Wasco County	Named forstate representative Jackson L. Morrow, an advocate for the formation of the county.	12,360	2,033 sq mi (5,265 km²)
Multnomah County	051	Portland	1854	Eastern part of Washington and the northern part of Clackamas counties	Named for theMultnomah people, aChinookan band fromSauvie Island.	795,897	435 sq mi (1,127 km²)
Polk County	053	Dallas	1845	Yamhill District	Named for PresidentJames Knox Polk, who was serving during the county's creation.	90,549	741 sq mi (1,919 km²)
Sherman County	055	Moro	1889	Northeast corner of Wasco County	Named for Union generalWilliam Tecumseh Sherman.	2,002	823 sq mi (2,132 km²)
Tillamook County	057	Tillamook	1853	Clatsop, Yamhill and Polk Counties	Named for theTillamook people, a Native American tribe.	27,264	1,102 sq mi (2,854 km²)
Umatilla County	059	Pendleton	1862	Central portion of Wasco County	Named for the adjacentUmatilla River, derived from aSahaptin, word possibly meaninglaughing waters.	80,491	3,215 sq mi (8,327 km²)
Union County	061	La Grande	1864	Baker County	Named for the town ofUnion, itself named for theUnion during theCivil War.	26,058	2,037 sq mi (5,276 km²)
Wallowa County	063	Enterprise	1887	Eastern portion of Union County.	Named after theNez Percewallowa, a tripod of poles used to support fish nets.	7,522	3,145 sq mi (8,146 km²)
Wasco County	065	The Dalles	1854	Parts of Clackamas, Lane, Linn and Marion counties	Named for theWasco people, a Native American tribe.	26,507	2,381 sq mi (6,167 km²)
Washington County	067	Hillsboro	1843	One of the original four districts of the Oregon Country (as Twality District)	Named for presidentGeorge Washington.	611,272	724 sq mi (1,875 km²)
Wheeler County	069	Fossil	1899	Grant County, Gilliam County, and Crook County	Named for Henry H. Wheeler, an early Oregon mail carrier.	1,456	1,715 sq mi (4,442 km²)
Yamhill County	071	McMinnville	1843	One of the original four districts of the Oregon Country	Named for the Yamhill band ofKalapuya, a local Native American group.	110,886	716 sq mi (1,854 km²)

References

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^"U.S. Census Bureau QuickFacts: Multnomah County, Oregon".census.gov.
^"Oregon Secretary of State: Constitution of Oregon".sos.oregon.gov.
^"EPA County FIPS Code Listing". EPA. Archived fromthe original on December 13, 2012. RetrievedApril 9, 2007.
^^a ^b ^cNational Association of Counties."NACo – Find a county". Archived fromthe original on October 25, 2007. RetrievedApril 26, 2007.
^^a ^bOregon State Archives."County Government".Oregon Blue Book. RetrievedFebruary 23, 2008.
^"U.S. Census Bureau QuickFacts: Oregon". U.S. Census Bureau. RetrievedMarch 14, 2025.

External links

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Wikimedia Commons has media related toCounties of Oregon.

Historic county boundaries from the Oregon Archives
Holman, Frederick van Voorhies (March 1910)."Oregon Counties, Their Creations and the Origins of Their Names" .Oregon Historical Quarterly.
Map of counties adjusted for population

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