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List of counties in Pennsylvania

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.

Alphabetical list

County FIPS code [1] County seat [2] Established [2] Origin Etymology [3] Population [2] Area [2] Map
Adams County 001 Gettysburg 1800 Parts of York County. John Adams 91,292 522 sq mi (1,352 km2)
Allegheny County 003 Pittsburgh 1788 Parts of Washington and Westmoreland Counties. Lenape word, of uncertain meaning, for the Allegheny River 1,281,666 745 sq mi (1,930 km2)
Armstrong County 005 Kittanning 1800 Parts of Allegheny, Lycoming, and Westmoreland Counties. John Armstrong 72,392 664 sq mi (1,720 km2)
Beaver County 007 Beaver 1800 Parts of Allegheny and Washington Counties. Beaver River 181,412 444 sq mi (1,150 km2)
Bedford County 009 Bedford 1771 Parts of Cumberland County. Fort Bedford, which is named for the Duke of Bedford 49,984 1,015 sq mi (2,629 km2)
Berks County 011 Reading 1752 Parts of Chester, Lancaster and Philadelphia Counties. The English county of Berkshire 373,638 866 sq mi (2,243 km2)
Blair County 013 Hollidaysburg 1846 Parts of Huntingdon and Bedford Counties. John Blair 129,144 527 sq mi (1,365 km2)
Bradford County 015 Towanda 1810 Parts of Luzerne and Lycoming Counties; originally called Ontario County, renamed as Bradford County in 1812. William Bradford 62,761 1,161 sq mi (3,007 km2)
Bucks County 017 Doylestown 1682 One of the original counties at the formation of Pennsylvania The English county of Buckinghamshire 597,635 622 sq mi (1,611 km2)
Butler County 019 Butler 1800 Parts of Allegheny County. General Richard Butler 174,083 795 sq mi (2,059 km2)
Cambria County 021 Ebensburg 1804 Parts of Somerset and Huntingdon Counties. Wales 152,593 693 sq mi (1,795 km2)
Cameron County 023 Emporium 1860 Parts of Clinton, Elk, McKean, and Potter Counties. Simon Cameron 5,974 399 sq mi (1,033 km2)
Carbon County 025 Jim Thorpe 1843 Parts of Monroe and Northampton Counties. Coal 58,802 387 sq mi (1,002 km2)
Centre County 027 Bellefonte 1800 Parts of Lycoming, Mifflin, Northumberland, and Huntingdon Counties. Centre Furnance, owned by Samuel Miles and John Patton 135,758 1,112 sq mi (2,880 km2)
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 433,501 760 sq mi (1,968 km2)
Clarion County 031 Clarion 1839 Parts of Venango and Armstrong Counties. Clarion River 41,765 609 sq mi (1,577 km2)
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 83,382 1,154 sq mi (2,989 km2)
Clinton County 035 Lock Haven 1839 Parts of Lycoming and Centre Counties. DeWitt Clinton 37,914 898 sq mi (2,326 km2)
Columbia County 037 Bloomsburg 1813 Parts of Northumberland and Luzerne Counties. Columbia, the first popular and poetic name for the United States 64,151 490 sq mi (1,269 km2)
Crawford County 039 Meadville 1800 Parts of Allegheny County. William Crawford 90,366 1,038 sq mi (2,688 km2)
Cumberland County 041 Carlisle 1750 Parts of Lancaster County. The historic English county of Cumberland 213,674 551 sq mi (1,427 km2)
Dauphin County 043 Harrisburg 1785 Parts of Lancaster County. The Dauphin 251,798 558 sq mi (1,445 km2)
Delaware County 045 Media 1789 Parts of Chester County. Delaware River 550,864 191 sq mi (495 km2)
Elk County 047 Ridgway 1843 Parts of Jefferson, McKean, and Clearfield Counties. Elk 35,112 832 sq mi (2,155 km2)
Erie County 049 Erie 1800 Parts of Allegheny County; attached to Crawford County until 1803. Lake Erie 280,843 802 sq mi (2,077 km2)
Fayette County 051 Uniontown 1783 Parts of Westmoreland County. The Marquis de Lafayette 148,644 798 sq mi (2,067 km2)
Forest County 053 Tionesta 1848 Parts of Jefferson County; attached to Jefferson County until 1857. Chief natural feature 4,946 431 sq mi (1,116 km2)
Franklin County 055 Chambersburg 1784 Parts of Cumberland County. Benjamin Franklin 129,313 771 sq mi (1,997 km2)
Fulton County 057 McConnellsburg 1850 Parts of Bedford County. Robert Fulton 14,261 438 sq mi (1,134 km2)
Greene County 059 Waynesburg 1796 Parts of Washington County. General Nathanael Greene 40,672 578 sq mi (1,497 km2)
Huntingdon County 061 Huntingdon 1787 Parts of Bedford County. Possibly the historic English county of Huntingdonshire 45,586 889 sq mi (2,302 km2)
Indiana County 063 Indiana 1803 Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806. Native Americans 89,605 834 sq mi (2,160 km2)
Jefferson County 065 Brookville 1804 Parts of Lycoming County. Attached to Westmoreland County until 1806 and to Indiana County until 1830. Thomas Jefferson 45,932 657 sq mi (1,702 km2)
Juniata County 067 Mifflintown 1831 Parts of Mifflin County. Juniata River 22,821 394 sq mi (1,020 km2)
Lackawanna County 069 Scranton 1878 Parts of Luzerne County. Lackawanna River 213,295 465 sq mi (1,204 km2)
Lancaster County 071 Lancaster 1729 Parts of Chester County. The English city of Lancaster 470,658 984 sq mi (2,549 km2)
Lawrence County 073 New Castle 1849 Parts of Beaver and Mercer Counties. The USS Lawrence 94,643 363 sq mi (940 km2)
Lebanon County 075 Lebanon 1813 Parts of Dauphin and Lancaster Counties. Lebanon Township; Lebanon is a Biblical term meaning White Mountain 120,327 363 sq mi (940 km2)
Lehigh County 077 Allentown 1812 Parts of Northampton County. Lehigh River 312,090 349 sq mi (904 km2)
Luzerne County 079 Wilkes-Barre 1786 Parts of Northumberland County. The Chevalier de Luzerne 319,250 907 sq mi (2,349 km2)
Lycoming County 081 Williamsport 1795 Parts of Northumberland County. Lycoming Creek 120,044 1,244 sq mi (3,222 km2)
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 45,936 984 sq mi (2,549 km2)
Mercer County 085 Mercer 1800 Parts of Allegheny County. Hugh Mercer 120,293 683 sq mi (1,769 km2)
Mifflin County 087 Lewistown 1789 Parts of Cumberland and Northumberland Counties. Thomas Mifflin 46,486 415 sq mi (1,075 km2)
Monroe County 089 Stroudsburg 1836 Parts of Pike and Northampton Counties. James Monroe 138,687 617 sq mi (1,598 km2)
Montgomery County 091 Norristown 1784 Parts of Philadelphia County. Uncertain; possibly either Richard Montgomery or the historic Welsh county of Montgomeryshire 750,097 487 sq mi (1,261 km2)
Montour County 093 Danville 1850 Parts of Columbia County. Madame Montour 18,236 132 sq mi (342 km2)
Northampton County 095 Easton 1752 Parts of Bucks County. The English city of Northampton 267,066 377 sq mi (976 km2)
Northumberland County 097 Sunbury 1772 Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties. The English county of Northumberland 94,556 477 sq mi (1,235 km2)
Perry County 099 New Bloomfield 1820 Parts of Cumberland County. Oliver Hazard Perry 43,602 556 sq mi (1,440 km2)
Philadelphia County 101 Philadelphia 1682 One of the original counties at the formation of Pennsylvania. The city and county of Philadelphia were combined in 1854 and city and county offices merged in 1952. "Brotherly love" from Greek philos ("love") and adelphos ("brother") 1,517,550 143 sq mi (370 km2)
Pike County 103 Milford 1814 Parts of Wayne County. Zebulon Pike 46,302 567 sq mi (1,469 km2)
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 18,080 1,081 sq mi (2,800 km2)
Schuylkill County 107 Pottsville 1811 Parts of Berks and Northampton Counties. Schuylkill River 150,336 778 sq mi (2,015 km2)
Snyder County 109 Middleburg 1855 Parts of Union County. Simon Snyder 37,546 332 sq mi (860 km2)
Somerset County 111 Somerset 1795 Parts of Bedford County. The English county of Somerset 80,023 1,081 sq mi (2,800 km2)
Sullivan County 113 Laporte 1847 Parts of Lycoming County; attached to Lycoming until 1848. John Sullivan 6,556 452 sq mi (1,171 km2)
Susquehanna County 115 Montrose 1810 Parts of Luzerne County ; attached to Luzerne County until 1812. Susquehanna River 42,238 832 sq mi (2,155 km2)
Tioga County 117 Wellsboro 1804 Parts of Lycoming County; attached to Lycoming until 1812. Tioga River 41,373 1,137 sq mi (2,945 km2)
Union County 119 Lewisburg 1813 Parts of Northumberland County. The Federal union of the United States 41,624 317 sq mi (821 km2)
Venango County 121 Franklin 1800 Parts of Allegheny and Lycoming Counties; attached to until 1805. A corruption of the Native word "onenge", meaning "otter" 57,565 683 sq mi (1,769 km2)
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. General Joseph Warren 43,863 898 sq mi (2,326 km2)
Washington County 125 Washington 1781 Parts of Westmoreland County. George Washington 202,897 861 sq mi (2,230 km2)
Wayne County 127 Honesdale 1798 Parts of Northampton County. Anthony Wayne 47,722 751 sq mi (1,945 km2)
Westmoreland County 129 Greensburg 1773 Parts of Bedford County. Possibly the historic English county of Westmorland 369,993 1,036 sq mi (2,683 km2)
Wyoming County 131 Tunkhannock 1842 Parts of Luzerne County. The Delaware word xwéːwaməŋk, meaning "at the big river flat" 28,080 405 sq mi (1,049 km2)
York County 133 York 1749 Parts of Lancaster County. The English city of York 381,751 910 sq mi (2,357 km2)

See also

Pennsylvania counties by per capita income arranged in order from richest to poorest

References

  1. ^ "EPA County FIPS Code Listing". EPA.gov. http://www.epa.gov/enviro/html/codes/pa.html. Retrieved 2008-02-23.
  2. ^ a b c d National Association of Counties. . . Retrieved 2008-04-30.
  3. ^ "Pennsylvania Counties". Pennsylvania State Archives. http://www.phmc.state.pa.us/bah/dam/counties/county.asp?secid=31. Retrieved September 14, 2009.
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