List of counties in Pennsylvania

Pennsylvania counties (clickable map)

The following is a list of the sixty-seven counties of the Commonwealth of Pennsylvania in the United States of America. The city of Philadelphia is coterminous with Philadelphia County, and governmental functions have been consolidated since 1854. Eight of the ten most populous counties are in the southeastern portion of the state, including four out of the top five as well.

A map of the counties of Pennsylvania in 1836

FIPS code

The Federal Information Processing Standard (FIPS) code, used by the United States 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 that county.^[1]

Population list

County	INCITS [2]	County seat [3]	Established [3]	Origin	Etymology [4]	Population [5]	Area [3]	Map
Adams County	001	Gettysburg	1800	Parts of York County.	John Adams, second U.S. President	101,407	522 sq mi (1,352 km^2)
Allegheny County	003	Pittsburgh	1788	Parts of Washington and Westmoreland Counties.	Delaware word for the Allegheny River, which possibly translates to "beautiful river"	1,223,348	745 sq mi (1,930 km^2)
Armstrong County	005	Kittanning	1800	Parts of Allegheny, Lycoming, and Westmoreland Counties.	John Armstrong, Revolutionary War general	68,941	664 sq mi (1,720 km^2)
Beaver County	007	Beaver	1800	Parts of Allegheny and Washington Counties.	Beaver River, itself named for the eponymous animal that was sighted along its banks	170,539	444 sq mi (1,150 km^2)
Bedford County	009	Bedford	1771	Parts of Cumberland County.	Fort Bedford, which is named for Duke John Russell of Bedford	49,762	1,015 sq mi (2,629 km^2)
Berks County	011	Reading	1752	Parts of Chester, Lancaster and Philadelphia Counties.	The English county of Berkshire	411,442	866 sq mi (2,243 km^2)
Blair County	013	Hollidaysburg	1846	Parts of Huntingdon and Bedford Counties.	John Blair, Pennsylvania state legislator	127,089	527 sq mi (1,365 km^2)
Bradford County	015	Towanda	1810	Parts of Luzerne and Lycoming Counties; originally called Ontario County, renamed as Bradford County in 1812.	William Bradford, second U.S. Attorney General	62,622	1,161 sq mi (3,007 km^2)
Bucks County	017	Doylestown	1682	One of the original counties at the formation of Pennsylvania	The English county of Buckinghamshire	625,249	622 sq mi (1,611 km^2)
Butler County	019	Butler	1800	Parts of Allegheny County.	Richard Butler, Revolutionary War general	183,862	795 sq mi (2,059 km^2)
Cambria County	021	Ebensburg	1804	Parts of Somerset and Huntingdon Counties.	Cambria, the traditional name for Wales	143,679	693 sq mi (1,795 km^2)
Cameron County	023	Emporium	1860	Parts of Clinton, Elk, McKean, and Potter Counties.	Simon Cameron, U.S. Senator from Pennsylvania	5,085	399 sq mi (1,033 km^2)
Carbon County	025	Jim Thorpe	1843	Parts of Monroe and Northampton Counties.	Carbon, the element found in coal	65,249	387 sq mi (1,002 km^2)
Centre County	027	Bellefonte	1800	Parts of Lycoming, Mifflin, Northumberland, and Huntingdon Counties.	Centre Furnance, the first industrial facility in the area	153,990	1,112 sq mi (2,880 km^2)
Chester County	029	West Chester	1682	One of the original counties at the formation of Pennsylvania.	The English city of Chester in the county of Cheshire	498,886	760 sq mi (1,968 km^2)
Clarion County	031	Clarion	1839	Parts of Venango and Armstrong Counties.	Clarion River, itself so named for its clarity	39,988	609 sq mi (1,577 km^2)
Clearfield County	033	Clearfield	1804	Parts of Lycoming and Huntingdon Counties; Clearfield functioned as a part of Centre County for judiciary purposes until 1822.	The cleared fields from logging in the area	81,642	1,154 sq mi (2,989 km^2)
Clinton County	035	Lock Haven	1839	Parts of Lycoming and Centre Counties.	DeWitt Clinton, New York Governor and prominent statesman	39,238	898 sq mi (2,326 km^2)
Columbia County	037	Bloomsburg	1813	Parts of Northumberland and Luzerne Counties.	Columbia, the first popular and poetic name for the United States	67,295	490 sq mi (1,269 km^2)
Crawford County	039	Meadville	1800	Parts of Allegheny County.	William Crawford, surveyor who helped to open trans-Appalachian lands to settlement	88,765	1,038 sq mi (2,688 km^2)
Cumberland County	041	Carlisle	1750	Parts of Lancaster County.	The historic English county of Cumberland	235,406	551 sq mi (1,427 km^2)
Dauphin County	043	Harrisburg	1785	Parts of Lancaster County.	Louis-Joseph, Dauphin of France	268,100	558 sq mi (1,445 km^2)
Delaware County	045	Media	1789	Parts of Chester County.	Delaware River, itself named for the Delaware tribe	558,979	191 sq mi (495 km^2)
Elk County	047	Ridgway	1843	Parts of Jefferson, McKean, and Clearfield Counties.	Elk, which inhabit the forested county	31,946	832 sq mi (2,155 km^2)
Erie County	049	Erie	1800	Parts of Allegheny County; attached to Crawford County until 1803.	Lake Erie	280,566	799 sq mi (2,069 km^2)
Fayette County	051	Uniontown	1783	Parts of Westmoreland County.	The Marquis de Lafayette, French-born Revolutionary War general	136,606	798 sq mi (2,067 km^2)
Forest County	053	Tionesta	1848	Parts of Jefferson County; attached to Jefferson County until 1857.	Chief natural feature	7,716	431 sq mi (1,116 km^2)
Franklin County	055	Chambersburg	1784	Parts of Cumberland County.	Benjamin Franklin, key founding father of the United States	149,618	771 sq mi (1,997 km^2)
Fulton County	057	McConnellsburg	1850	Parts of Bedford County.	Robert Fulton, inventor of the steamboat	14,845	438 sq mi (1,134 km^2)
Greene County	059	Waynesburg	1796	Parts of Washington County.	Nathanael Greene, Revolutionary War general	38,686	578 sq mi (1,497 km^2)
Huntingdon County	061	Huntingdon	1787	Parts of Bedford County.	The historic English county of Huntingdonshire	45,913	889 sq mi (2,302 km^2)
Indiana County	063	Indiana	1803	Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806.	Native Americans	88,880	834 sq mi (2,160 km^2)
Jefferson County	065	Brookville	1804	Parts of Lycoming County. Attached to Westmoreland County until 1806 and to Indiana County until 1830.	Thomas Jefferson, third U.S. President	45,200	657 sq mi (1,702 km^2)
Juniata County	067	Mifflintown	1831	Parts of Mifflin County.	Juniata River, itself named for the Iroquoian word Onayutta, meaning "Standing Stone"	24,636	394 sq mi (1,020 km^2)
Lackawanna County	069	Scranton	1878	Parts of Luzerne County.	Lackawanna River, itself named for the Delaware word meaning "stream that forks"	214,437	465 sq mi (1,204 km^2)
Lancaster County	071	Lancaster	1729	Parts of Chester County.	The English city of Lancaster	519,445	984 sq mi (2,549 km^2)
Lawrence County	073	New Castle	1849	Parts of Beaver and Mercer Counties.	James Lawrence, War of 1812 captain	91,108	363 sq mi (940 km^2)
Lebanon County	075	Lebanon	1813	Parts of Dauphin and Lancaster Counties.	Lebanon, the Biblical term for "White Mountain", which references the piety of the county's Moravian founders	133,568	363 sq mi (940 km^2)
Lehigh County	077	Allentown	1812	Parts of Northampton County.	Lehigh River	349,497	349 sq mi (904 km^2)
Luzerne County	079	Wilkes-Barre	1786	Parts of Northumberland County.	Anne-César, Chevalier de la Luzerne, French ambassador to the U.S. who aided republican causes	320,918	907 sq mi (2,349 km^2)
Lycoming County	081	Williamsport	1795	Parts of Northumberland County.	Lycoming Creek, itself named for the Delaware word iacomic meaning "great steam"	116,111	1,244 sq mi (3,222 km^2)
McKean County	083	Smethport	1804	Parts 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, second Governor of Pennsylvania	43,450	984 sq mi (2,549 km^2)
Mercer County	085	Mercer	1800	Parts of Allegheny County.	Hugh Mercer, Revolutionary War general	116,638	683 sq mi (1,769 km^2)
Mifflin County	087	Lewistown	1789	Parts of Cumberland and Northumberland Counties.	Thomas Mifflin, first Governor of Pennsylvania	46,682	415 sq mi (1,075 km^2)
Monroe County	089	Stroudsburg	1836	Parts of Pike and Northampton Counties.	James Monroe, fifth U.S President	169,842	617 sq mi (1,598 km^2)
Montgomery County	091	Norristown	1784	Parts of Philadelphia County.	The historic Welsh county of Montgomeryshire or Richard Montgomery, a general killed in the 1775 Battle of Quebec	799,874	487 sq mi (1,261 km^2)
Montour County	093	Danville	1850	Parts of Columbia County.	Madame Montour, colonial ambassador to the Native Americans	18,267	132 sq mi (342 km^2)
Northampton County	095	Easton	1752	Parts of Bucks County.	The English town of Northampton	297,735	377 sq mi (976 km^2)
Northumberland County	097	Sunbury	1772	Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties.	The English county of Northumberland	94,528	477 sq mi (1,235 km^2)
Perry County	099	New Bloomfield	1820	Parts of Cumberland County.	Oliver Hazard Perry, War of 1812 commodore	45,969	556 sq mi (1,440 km^2)
Philadelphia County	101	Philadelphia	1682	One of the original counties at the formation of Pennsylvania.	"Brotherly love" from Greek philos ("love") and adelphos ("brother")	1,526,006	143 sq mi (370 km^2)
Pike County	103	Milford	1814	Parts of Wayne County.	Zebulon Pike, explorer of the American West	57,369	567 sq mi (1,469 km^2)
Potter County	105	Coudersport	1804	From 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 general	17,457	1,081 sq mi (2,800 km^2)
Schuylkill County	107	Pottsville	1811	Parts of Berks and Northampton Counties.	Schuylkill River, itself a Dutch corruption of a Delaware word possibly meaning "hidden river"	148,289	778 sq mi (2,015 km^2)
Snyder County	109	Middleburg	1855	Parts of Union County.	Simon Snyder, third Governor of Pennsylvania	39,702	332 sq mi (860 km^2)
Somerset County	111	Somerset	1795	Parts of Bedford County.	The historic English county of Somerset	77,742	1,081 sq mi (2,800 km^2)
Sullivan County	113	Laporte	1847	Parts of Lycoming County; attached to Lycoming until 1848.	John Sullivan, Revolutionary War general	6,428	452 sq mi (1,171 km^2)
Susquehanna County	115	Montrose	1810	Parts of Luzerne County ; attached to Luzerne County until 1812.	Susquehanna River, itself named after an Algonquin word for "muddy current"	43,356	832 sq mi (2,155 km^2)
Tioga County	117	Wellsboro	1804	Parts of Lycoming County; attached to Lycoming until 1812.	Tioga River, itself named for the Delaware word for "forks of the stream"	41,981	1,137 sq mi (2,945 km^2)
Union County	119	Lewisburg	1813	Parts of Northumberland County.	The federal union of the states	44,947	317 sq mi (821 km^2)
Venango County	121	Franklin	1800	Parts of Allegheny and Lycoming Counties; attached to until 1805.	A corruption of the Delaware word onenge, meaning "otter"	54,984	683 sq mi (1,769 km^2)
Warren County	123	Warren	1800	Parts 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 general	41,815	898 sq mi (2,326 km^2)
Washington County	125	Washington	1781	Parts of Westmoreland County.	George Washington, first U.S. President	207,820	861 sq mi (2,230 km^2)
Wayne County	127	Honesdale	1798	Parts of Northampton County.	Anthony Wayne, Revolutionary War general	52,822	751 sq mi (1,945 km^2)
Westmoreland County	129	Greensburg	1773	Parts of Bedford County.	The historic English county of Westmorland	365,169	1,036 sq mi (2,683 km^2)
Wyoming County	131	Tunkhannock	1842	Parts of Luzerne County.	The Delaware word xwéːwaməŋk, meaning "at the big river flat"	28,276	405 sq mi (1,049 km^2)
York County	133	York	1749	Parts of Lancaster County.	The English city of York	434,972	910 sq mi (2,357 km^2)

See also

• Pennsylvania counties by per capita income
• List of municipalities in Pennsylvania
• List of cities in Pennsylvania
• List of Pennsylvania Municipalities and Counties with Home Rule Charters, Optional Charters, or Optional Plans
• List of towns and boroughs in Pennsylvania
• List of townships in Pennsylvania

References

1. "EPA County FIPS Code Listing". US Environmental Protection Agency. Retrieved July 24, 2007.
2. "EPA County FIPS Code Listing". EPA.gov. Retrieved 2008-02-23.
3. National Association of Counties. "NACo - Find a county". Archived from the original on October 25, 2007. Retrieved 2008-04-30.
4. "Pennsylvania Counties". Pennsylvania State Archives. Retrieved 2009-09-14.
5. http://factfinder2.census.gov