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List of counties in Pennsylvania

From Wikipedia, the free encyclopedia

Counties of Pennsylvania
Pennsylvania counties (clickable map)
Pennsylvania counties (clickable map)
LocationPennsylvania
Number67
Populations4,348 (Cameron) – 1,573,916 (Philadelphia)
Areas132 square miles (340 km2) (Montour) – 1,244 square miles (3,220 km2) (Lycoming)
Government

The following is a list of the 67counties of theU.S. state ofPennsylvania. The city ofPhiladelphia is coterminous withPhiladelphia County, the municipalities having been consolidated in 1854, and all remaining county government functions having been merged into the city after a1951 referendum.[1][2] Eight of the ten most populous counties are in thesoutheastern portion of the state, including four out of the top five, and eight of the top ten most populous counties are in either theGreater Philadelphia orGreater Pittsburghmetropolitan statistical areas.

FIPS code

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An 1836 map ofPennsylvania's counties

TheFederal Information Processing Standards (FIPS) code, used by theU.S. government to uniquely identify counties, is provided with each entry. FIPS codes are five-digit numbers; for Pennsylvania the codes start with 42 and are completed with the three-digit county code. The FIPS code for each county in the table links to census data for the specific county.[3]

County list

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County
FIPS code[4] County seat[5] Established[5] Origin Etymology[6]Population[7]Area[5]Map
Adams County001Gettysburg1800Parts of York CountyJohn Adams, secondU.S. President107,914522 sq mi
(1,352 km2)		State map highlighting Adams County
Allegheny County003Pittsburgh1788Parts of Washington and Westmoreland CountiesDelaware word for theAllegheny River, which possibly translates to "beautiful river"1,231,814745 sq mi
(1,930 km2)		State map highlighting Allegheny County
Armstrong County005Kittanning1800Parts of Allegheny, Lycoming, and Westmoreland CountiesJohn Armstrong,Revolutionary War general63,679664 sq mi
(1,720 km2)		State map highlighting Armstrong County
Beaver County007Beaver1800Parts of Allegheny and Washington CountiesBeaver River, itself named for the eponymousanimal that was sighted along its banks165,540444 sq mi
(1,150 km2)		State map highlighting Beaver County
Bedford County009Bedford1771Parts of Cumberland CountyFort Bedford, which is named forJohn Russell, 4th Duke of Bedford47,6431,015 sq mi
(2,629 km2)		State map highlighting Bedford County
Berks County011Reading1752Parts of Chester, Lancaster and Philadelphia CountiesThe English county ofBerkshire439,117866 sq mi
(2,243 km2)		State map highlighting Berks County
Blair County013Hollidaysburg1846Parts of Huntingdon and Bedford CountiesJohn Blair (1766-1832) a local pioneer farmer, merchant, and public servant[8]120,269527 sq mi
(1,365 km2)		State map highlighting Blair County
Bradford County015Towanda1810Parts of Luzerne and Lycoming Counties; originally called Ontario County, renamed as Bradford County in 1812.William Bradford, secondU.S. Attorney General59,6991,161 sq mi
(3,007 km2)		State map highlighting Bradford County
Bucks County017Doylestown1682One of the original counties at the formation of PennsylvaniaThe English county ofBuckinghamshire650,131622 sq mi
(1,611 km2)		State map highlighting Bucks County
Butler County019Butler1800Parts of Allegheny CountyRichard Butler, Revolutionary War general199,341795 sq mi
(2,059 km2)		State map highlighting Butler County
Cambria County021Ebensburg1804Parts of Somerset and Huntingdon CountiesCambria, the traditional name forWales130,108693 sq mi
(1,795 km2)		State map highlighting Cambria County
Cameron County023Emporium1860Parts of Clinton, Elk, McKean, and Potter CountiesSimon Cameron,U.S. Senator from Pennsylvania4,348399 sq mi
(1,033 km2)		State map highlighting Cameron County
Carbon County025Jim Thorpe1843Parts of Monroe and Northampton CountiesCarbon, the element found incoal65,743387 sq mi
(1,002 km2)		State map highlighting Carbon County
Centre County027Bellefonte1800Parts of Lycoming, Mifflin, Northumberland, and Huntingdon CountiesCentre Furnace, the first industrial facility in the area159,8051,112 sq mi
(2,880 km2)		State map highlighting Centre County
Chester County029West Chester1682One of the original counties at the formation of PennsylvaniaThe English city ofChester in the county ofCheshire560,745760 sq mi
(1,968 km2)		State map highlighting Chester County
Clarion County031Clarion1839Parts of Venango and Armstrong CountiesClarion River, itself so named for its clarity36,855609 sq mi
(1,577 km2)		State map highlighting Clarion County
Clearfield County033Clearfield1804Parts of Lycoming and Huntingdon Counties; Clearfield functioned as a part of Centre County for judiciary purposes until 1822.The cleared fields fromlogging in the area78,1321,154 sq mi
(2,989 km2)		State map highlighting Clearfield County
Clinton County035Lock Haven1839Parts of Lycoming and Centre CountiesDeWitt Clinton,New York Governor and prominent statesman37,865898 sq mi
(2,326 km2)		State map highlighting Clinton County
Columbia County037Bloomsburg1813Parts of Northumberland and Luzerne CountiesColumbia, the first popular and poetic name for the United States66,012490 sq mi
(1,269 km2)		State map highlighting Columbia County
Crawford County039Meadville1800Parts of Allegheny CountyWilliam Crawford, surveyor who helped to open trans-Appalachian lands to settlement82,0891,038 sq mi
(2,688 km2)		State map highlighting Crawford County
Cumberland County041Carlisle1750Parts of Lancaster CountyThe historic English county ofCumberland275,516551 sq mi
(1,427 km2)		State map highlighting Cumberland County
Dauphin County043Harrisburg1785Parts of Lancaster CountyLouis-Joseph, Dauphin of France293,029558 sq mi
(1,445 km2)		State map highlighting Dauphin County
Delaware County045Media1789Parts of Chester CountyDelaware River, itself named forLord De La Warr584,882191 sq mi
(495 km2)		State map highlighting Delaware County
Elk County047Ridgway1843Parts of Jefferson, McKean, and Clearfield CountiesElk, which inhabit the forested county30,124832 sq mi
(2,155 km2)		State map highlighting Elk County
Erie County049Erie1800Parts of Allegheny County; attached to Crawford County until 1803.Lake Erie267,750799 sq mi
(2,069 km2)		State map highlighting Erie County
Fayette County051Uniontown1783Parts of Westmoreland CountyTheMarquis de Lafayette,French-born Revolutionary War general123,941798 sq mi
(2,067 km2)		State map highlighting Fayette County
Forest County053Tionesta1848Parts of Jefferson County; attached to Jefferson County until 1857.Chief natural feature6,601431 sq mi
(1,116 km2)		State map highlighting Forest County
Franklin County055Chambersburg1784Parts of Cumberland CountyBenjamin Franklin, keyFounding Father of the United States159,285771 sq mi
(1,997 km2)		State map highlighting Franklin County
Fulton County057McConnellsburg1850Parts of Bedford CountyRobert Fulton, inventor of thesteamboat14,452438 sq mi
(1,134 km2)		State map highlighting Fulton County
Greene County059Waynesburg1796Parts of Washington CountyNathanael Greene, Revolutionary War general33,960578 sq mi
(1,497 km2)		State map highlighting Greene County
Huntingdon County061Huntingdon1787Parts of Bedford CountyThe historic English county ofHuntingdonshire43,359889 sq mi
(2,302 km2)		State map highlighting Huntingdon County
Indiana County063Indiana1803Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806.From the Indiana Grant of 1768, that theIroquois Six Nations were forced to make to "suffering traders" under theFort Stanwix Treaty of 1768.82,953834 sq mi
(2,160 km2)		State map highlighting Indiana County
Jefferson County065Brookville1804Parts of Lycoming County Attached to Westmoreland County until 1806 and to Indiana County until 1830.Thomas Jefferson, third U.S. President43,367657 sq mi
(1,702 km2)		State map highlighting Jefferson County
Juniata County067Mifflintown1831Parts of Mifflin CountyJuniata River, itself named for theIroquoian wordOnayutta, meaning "Standing Stone"23,395394 sq mi
(1,020 km2)		State map highlighting Juniata County
Lackawanna County069Scranton1878Parts of Luzerne CountyLackawanna River, itself named for theDelaware word meaning "stream that forks"216,859465 sq mi
(1,204 km2)		State map highlighting Lackawanna County
Lancaster County071Lancaster1729Parts of Chester CountyThe English city ofLancaster563,293984 sq mi
(2,549 km2)		State map highlighting Lancaster County
Lawrence County073New Castle1849Parts of Beaver and Mercer CountiesUSS Lawrence (1813), itself named in honor ofJames Lawrence,War of 1812 captain84,233363 sq mi
(940 km2)		State map highlighting Lawrence County
Lebanon County075Lebanon1813Parts of Dauphin and Lancaster CountiesLebanon, theBiblical term for "White Mountain", which references the piety of the county'sMoravian founders145,319363 sq mi
(940 km2)		State map highlighting Lebanon County
Lehigh County077Allentown1812Parts of Northampton CountyLehigh River, from theLenapeLechewuekink, "where there areforks".385,655349 sq mi
(904 km2)		State map highlighting Lehigh County
Luzerne County079Wilkes-Barre1786Parts of Northumberland CountyAnne-César, Chevalier de la Luzerne, French ambassador to the U.S. who aided republican causes331,379907 sq mi
(2,349 km2)		State map highlighting Luzerne County
Lycoming County081Williamsport1795Parts of Northumberland County; originally called Jefferson County, ultimately was renamed as Lycoming County.Lycoming Creek, itself named for theDelaware wordiacomic meaning "great steam"113,2361,244 sq mi
(3,222 km2)		State map highlighting Lycoming County
McKean County083Smethport1804Parts of Lycoming County; Attached to Centre County until 1814 and to Lycoming County until 1826 for judicial and elective purposes. McKean was fully organized only in 1826.Thomas McKean, secondGovernor of Pennsylvania39,478984 sq mi
(2,549 km2)		State map highlighting McKean County
Mercer County085Mercer1800Parts of Allegheny CountyHugh Mercer, Revolutionary War general108,140683 sq mi
(1,769 km2)		State map highlighting Mercer County
Mifflin County087Lewistown1789Parts of Cumberland and Northumberland CountiesThomas Mifflin, first Governor of Pennsylvania45,935415 sq mi
(1,075 km2)		State map highlighting Mifflin County
Monroe County089Stroudsburg1836Parts of Pike and Northampton CountiesJames Monroe, fifth U.S President166,523617 sq mi
(1,598 km2)		State map highlighting Monroe County
Montgomery County091Norristown1784Parts of Philadelphia CountyThe historic Welsh county ofMontgomeryshire orRichard Montgomery, a general killed in the 1775Battle of Quebec879,190487 sq mi
(1,261 km2)		State map highlighting Montgomery County
Montour County093Danville1850Parts of Columbia CountyMadame Montour, colonial ambassador to the Native Americans18,115132 sq mi
(342 km2)		State map highlighting Montour County
Northampton County095Easton1752Parts of Bucks CountyThe English town ofNorthampton322,989377 sq mi
(976 km2)		State map highlighting Northampton County
Northumberland County097Sunbury1772Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton CountiesThe English county ofNorthumberland90,027477 sq mi
(1,235 km2)		State map highlighting Northumberland County
Perry County099New Bloomfield1820Parts of Cumberland CountyOliver Hazard Perry, War of 1812 commodore46,816556 sq mi
(1,440 km2)		State map highlighting Perry County
Philadelphia County101Philadelphia1682One of the original counties at the formation of Pennsylvania"Brotherly love" from Greek philos ("love") and adelphos ("brother")1,573,916143 sq mi
(370 km2)		State map highlighting Philadelphia County
Pike County103Milford1814Parts of Wayne CountyZebulon Pike, explorer of theAmerican West62,376567 sq mi
(1,469 km2)		State map highlighting Pike County
Potter County105Coudersport1804From Lycoming county Attached to Lycoming County until 1826 and to McKean County until 1835 for judicial purposes, Potter was not fully organized until 1835.James Potter, Revolutionary War general15,9931,081 sq mi
(2,800 km2)		State map highlighting Potter County
Schuylkill County107Pottsville1811Parts of Berks and Northampton CountiesSchuylkill River, itself aDutch corruption of aDelaware word possibly meaning "hidden river"144,523778 sq mi
(2,015 km2)		State map highlighting Schuylkill County
Snyder County109Middleburg1855Parts of Union CountySimon Snyder, third Governor of Pennsylvania39,627332 sq mi
(860 km2)		State map highlighting Snyder County
Somerset County111Somerset1795Parts of Bedford CountyThe historic English county ofSomerset72,1341,081 sq mi
(2,800 km2)		State map highlighting Somerset County
Sullivan County113Laporte1847Parts of Lycoming County; attached to Lycoming until 1848.John Sullivan, Revolutionary War general5,927452 sq mi
(1,171 km2)		State map highlighting Sullivan County
Susquehanna County115Montrose1810Parts of Luzerne County; attached to Luzerne County until 1812.Susquehanna River, itself named after anAlgonquin word for "muddy current"38,100832 sq mi
(2,155 km2)		State map highlighting Susquehanna County
Tioga County117Wellsboro1804Parts of Lycoming County; attached to Lycoming until 1812.Tioga River, itself named for theDelaware word for "forks of the stream"40,6981,137 sq mi
(2,945 km2)		State map highlighting Tioga County
Union County119Lewisburg1813Parts of Northumberland CountyThe federalunion of the states42,159317 sq mi
(821 km2)		State map highlighting Union County
Venango County121Franklin1800Parts of Allegheny and Lycoming Counties; attached to until 1805.A corruption of theDelaware wordonenge, meaning "otter"49,476683 sq mi
(1,769 km2)		State map highlighting Venango County
Warren County123Warren1800Parts of Allegheny and Lycoming counties; attached to Crawford County until 1805 and then to Venango until Warren was formally organized in 1819.Joseph Warren, Revolutionary War general37,373898 sq mi
(2,326 km2)		State map highlighting Warren County
Washington County125Washington1781Parts of Westmoreland CountyGeorge Washington, first U.S. President210,434861 sq mi
(2,230 km2)		State map highlighting Washington County
Wayne County127Honesdale1798Parts of Northampton CountyAnthony Wayne, Revolutionary War general51,419751 sq mi
(1,945 km2)		State map highlighting Wayne County
Westmoreland County129Greensburg1773Parts of Bedford CountyThe historic English county ofWestmorland350,9351,036 sq mi
(2,683 km2)		State map highlighting Westmoreland County
Wyoming County131Tunkhannock1843Parts of Luzerne CountyTheDelaware wordxwéːwaməŋk, meaning "at the big river flat"25,771405 sq mi
(1,049 km2)		State map highlighting Wyoming County
York County133York1749Parts of Lancaster CountyThe English city ofYork471,240910 sq mi
(2,357 km2)		State map highlighting York County

Former counties

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TheProvince of Pennsylvania'sThree Lower Counties had been transferred fromNew York Colony in 1682. In 1701 these counties became a separate colony calledDelaware Colony, although it shared the samecolonial governor as Pennsylvania until independence in 1776.

County
FIPS code[4] County seat[9][10] Est.[9][10] History[9][11] Etymology[11]Population[12]Area[10]Map
Kent County001Dover1680Created from Whorekill (Hoarkill) District. Formerly known asSt. Jones County.Named in 1682 byWilliam Penn for theEnglish county ofKent.192,690800 sq mi
(2,072 km2)		State map highlighting Kent County
New Castle County003Wilmington1664Original County (Formally New Amstel)Named in 1673 byDutch Governor Anthony Colve for the town ofNew Castle, Delaware as anAnglicization ofNieuw Amstel.588,093494 sq mi
(1,279 km2)		State map highlighting New Castle County
Sussex County005Georgetown1664Created from Whorekill (Hoarkill) District. Formerly known asDeale CountyNamed in 1682 byWilliam Penn for theEnglish county ofSussex, which was his home county.271,1341,196 sq mi
(3,098 km2)		State map highlighting Sussex County

See also

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Further reading

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References

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  1. ^Petshek, Kirk R. (1973).The Challenge of Urban Reform. Philadelphia, Pennsylvania: Temple University Press. p. 39.ISBN 978-0-87722-058-9.
  2. ^"City and County Merger Believed OK'd by Voters".The Philadelphia Inquirer. November 7, 1951 – viaNewspapers.com.
  3. ^"EPA County FIPS Code Listing". US Environmental Protection Agency. Archived fromthe original on December 13, 2012. RetrievedJuly 24, 2007.
  4. ^ab"EPA County FIPS Code Listing".EPA.gov. Archived fromthe original on December 13, 2012. RetrievedFebruary 23, 2008.
  5. ^abcNational Association of Counties."NACo – Find a county". Archived fromthe original on October 25, 2007. RetrievedApril 30, 2008.
  6. ^"Pennsylvania Counties".Pennsylvania State Archives. Archived fromthe original on March 6, 2009. RetrievedSeptember 14, 2009.
  7. ^US Census Bureau."U.S. Census website".United States Census Bureau. RetrievedMarch 14, 2025.
  8. ^"John Blair Historical Marker".The Historical Marker Database. RetrievedSeptember 8, 2024.
  9. ^abcDelaware Genealogical Society (1997)."Delaware Counties and Hundreds". Delaware Genealogical Society. Archived fromthe original on June 13, 2006. RetrievedJune 1, 2006.
  10. ^abcNational Association of Counties."NACo - Find a county". Archived fromthe original on April 10, 2005. RetrievedApril 30, 2008.
  11. ^abThe Historical Society of Delaware (1997)."Delaware Counties". Archived fromthe original on July 19, 2006. RetrievedJune 1, 2006.
  12. ^Delaware Census Data
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