List of counties in Pennsylvania

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There are sixty-seven counties of the Commonwealth of Pennsylvania in the United States of America. The city of Philadelphia shares boundaries with Philadelphia County, and governmental functions have been shared since 1854.

FIPS code[change | edit source]

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]

Alphabetical list[change | edit source]

County
FIPS Code
[2]
County seat
[3]
Established
[3]
Origin
Meaning of name
[4]
Population
[5]
Area
[3]
Map
Adams County 001 Gettysburg 1800 Parts of York County. John Adams,second U.S. President &&&&&&&&&0101407.&&&&&0101,407 &&&&&&&&&&&&0522.&&&&&0522 sq mi
(&&&&&&&&&&&01352.&&&&&01,352 km²)
State map highlighting Adams County
Allegheny County 003 Pittsburgh 1788 Parts of Washington and Westmoreland Counties. Lenape word for the Allegheny River, which possibly translates to "beautiful river" &&&&&&&&01223348.&&&&&01,223,348 &&&&&&&&&&&&0745.&&&&&0745 sq mi
(&&&&&&&&&&&01930.&&&&&01,930 km²)
State map highlighting Allegheny County
Armstrong County 005 Kittanning 1800 Parts of Allegheny, Lycoming, and Westmoreland Counties. John Armstrong, Revolutionary War general &&&&&&&&&&068941.&&&&&068,941 &&&&&&&&&&&&0664.&&&&&0664 sq mi
(&&&&&&&&&&&01720.&&&&&01,720 km²)
State map highlighting Armstrong County
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 &&&&&&&&&0170539.&&&&&0170,539 &&&&&&&&&&&&0444.&&&&&0444 sq mi
(&&&&&&&&&&&01150.&&&&&01,150 km²)
State map highlighting Beaver County
Bedford County 009 Bedford 1771 Parts of Cumberland County. Fort Bedford, which is named for John Russell, 4th Duke of Bedford &&&&&&&&&&049762.&&&&&049,762 &&&&&&&&&&&01015.&&&&&01,015 sq mi
(&&&&&&&&&&&02629.&&&&&02,629 km²)
State map highlighting Bedford County
Berks County 011 Reading 1752 Parts of Chester, Lancaster and Philadelphia Counties. The English county of Berkshire &&&&&&&&&0411442.&&&&&0411,442 &&&&&&&&&&&&0866.&&&&&0866 sq mi
(&&&&&&&&&&&02243.&&&&&02,243 km²)
State map highlighting Berks County
Blair County 013 Hollidaysburg 1846 Parts of Huntingdon and Bedford Counties. John Blair, Pennsylvania state legislator &&&&&&&&&0127089.&&&&&0127,089 &&&&&&&&&&&&0527.&&&&&0527 sq mi
(&&&&&&&&&&&01365.&&&&&01,365 km²)
State map highlighting Blair County
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 &&&&&&&&&&062622.&&&&&062,622 &&&&&&&&&&&01161.&&&&&01,161 sq mi
(&&&&&&&&&&&03007.&&&&&03,007 km²)
State map highlighting Bradford County
Bucks County 017 Doylestown 1682 One of the original counties at the formation of Pennsylvania The English county of Buckinghamshire &&&&&&&&&0625249.&&&&&0625,249 &&&&&&&&&&&&0622.&&&&&0622 sq mi
(&&&&&&&&&&&01611.&&&&&01,611 km²)
State map highlighting Bucks County
Butler County 019 Butler 1800 Parts of Allegheny County. Richard Butler, Revolutionary War general &&&&&&&&&0183862.&&&&&0183,862 &&&&&&&&&&&&0795.&&&&&0795 sq mi
(&&&&&&&&&&&02059.&&&&&02,059 km²)
State map highlighting Butler County
Cambria County 021 Ebensburg 1804 Parts of Somerset and Huntingdon Counties. Cambria, the traditional name for Wales &&&&&&&&&0143679.&&&&&0143,679 &&&&&&&&&&&&0693.&&&&&0693 sq mi
(&&&&&&&&&&&01795.&&&&&01,795 km²)
State map highlighting Cambria County
Cameron County 023 Emporium 1860 Parts of Clinton, Elk, McKean, and Potter Counties. Simon Cameron, U.S. Senator from Pennsylvania &&&&&&&&&&&05085.&&&&&05,085 &&&&&&&&&&&&0399.&&&&&0399 sq mi
(&&&&&&&&&&&01033.&&&&&01,033 km²)
State map highlighting Cameron County
Carbon County 025 Jim Thorpe 1843 Parts of Monroe and Northampton Counties. Carbon, the element found in coal &&&&&&&&&&065249.&&&&&065,249 &&&&&&&&&&&&0387.&&&&&0387 sq mi
(&&&&&&&&&&&01002.&&&&&01,002 km²)
State map highlighting Carbon County
Centre County 027 Bellefonte 1800 Parts of Lycoming, Mifflin, Northumberland, and Huntingdon Counties. Centre Furnace, the first industrial facility in the area &&&&&&&&&0153990.&&&&&0153,990 &&&&&&&&&&&01112.&&&&&01,112 sq mi
(&&&&&&&&&&&02880.&&&&&02,880 km²)
State map highlighting Centre County
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 &&&&&&&&&0498886.&&&&&0498,886 &&&&&&&&&&&&0760.&&&&&0760 sq mi
(&&&&&&&&&&&01968.&&&&&01,968 km²)
State map highlighting Chester County
Clarion County 031 Clarion 1839 Parts of Venango and Armstrong Counties. Clarion River, itself so named for its clarity &&&&&&&&&&039988.&&&&&039,988 &&&&&&&&&&&&0609.&&&&&0609 sq mi
(&&&&&&&&&&&01577.&&&&&01,577 km²)
State map highlighting Clarion County
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 &&&&&&&&&&081642.&&&&&081,642 &&&&&&&&&&&01154.&&&&&01,154 sq mi
(&&&&&&&&&&&02989.&&&&&02,989 km²)
State map highlighting Clearfield County
Clinton County 035 Lock Haven 1839 Parts of Lycoming and Centre Counties. DeWitt Clinton, New York Governor and prominent statesman &&&&&&&&&&039238.&&&&&039,238 &&&&&&&&&&&&0898.&&&&&0898 sq mi
(&&&&&&&&&&&02326.&&&&&02,326 km²)
State map highlighting Clinton County
Columbia County 037 Bloomsburg 1813 Parts of Northumberland and Luzerne Counties. Columbia, the first popular and poetic name for the United States &&&&&&&&&&067295.&&&&&067,295 &&&&&&&&&&&&0490.&&&&&0490 sq mi
(&&&&&&&&&&&01269.&&&&&01,269 km²)
State map highlighting Columbia County
Crawford County 039 Meadville 1800 Parts of Allegheny County. William Crawford, surveyor who helped to open trans-Appalachian lands to settlement &&&&&&&&&&088765.&&&&&088,765 &&&&&&&&&&&01038.&&&&&01,038 sq mi
(&&&&&&&&&&&02688.&&&&&02,688 km²)
State map highlighting Crawford County
Cumberland County 041 Carlisle 1750 Parts of Lancaster County. The historic English county of Cumberland &&&&&&&&&0235406.&&&&&0235,406 &&&&&&&&&&&&0551.&&&&&0551 sq mi
(&&&&&&&&&&&01427.&&&&&01,427 km²)
State map highlighting Cumberland County
Dauphin County 043 Harrisburg 1785 Parts of Lancaster County. Louis-Joseph, Dauphin of France &&&&&&&&&0268100.&&&&&0268,100 &&&&&&&&&&&&0558.&&&&&0558 sq mi
(&&&&&&&&&&&01445.&&&&&01,445 km²)
State map highlighting Dauphin County
Delaware County 045 Media 1789 Parts of Chester County. Delaware River, itself named for the Delaware tribe &&&&&&&&&0558979.&&&&&0558,979 &&&&&&&&&&&&0191.&&&&&0191 sq mi
(&&&&&&&&&&&&0495.&&&&&0495 km²)
State map highlighting Delaware County
Elk County 047 Ridgway 1843 Parts of Jefferson, McKean, and Clearfield Counties. Elk, which inhabit the forested county &&&&&&&&&&031946.&&&&&031,946 &&&&&&&&&&&&0832.&&&&&0832 sq mi
(&&&&&&&&&&&02155.&&&&&02,155 km²)
State map highlighting Elk County
Erie County 049 Erie 1800 Parts of Allegheny County; attached to Crawford County until 1803. Lake Erie &&&&&&&&&0280566.&&&&&0280,566 &&&&&&&&&&&01558.&&&&&01,558 sq mi
(&&&&&&&&&&&04035.&&&&&04,035 km²)
State map highlighting Erie County
Fayette County 051 Uniontown 1783 Parts of Westmoreland County. The Marquis de Lafayette, French-born Revolutionary War general &&&&&&&&&0136606.&&&&&0136,606 &&&&&&&&&&&&0798.&&&&&0798 sq mi
(&&&&&&&&&&&02067.&&&&&02,067 km²)
State map highlighting Fayette County
Forest County 053 Tionesta 1848 Parts of Jefferson County; attached to Jefferson County until 1857. Chief natural feature &&&&&&&&&&&07716.&&&&&07,716 &&&&&&&&&&&&0431.&&&&&0431 sq mi
(&&&&&&&&&&&01116.&&&&&01,116 km²)
State map highlighting Forest County
Franklin County 055 Chambersburg 1784 Parts of Cumberland County. Benjamin Franklin, key founding father of the United States &&&&&&&&&0149618.&&&&&0149,618 &&&&&&&&&&&&0771.&&&&&0771 sq mi
(&&&&&&&&&&&01997.&&&&&01,997 km²)
State map highlighting Franklin County
Fulton County 057 McConnellsburg 1850 Parts of Bedford County. Robert Fulton, inventor of the steamboat &&&&&&&&&&014845.&&&&&014,845 &&&&&&&&&&&&0438.&&&&&0438 sq mi
(&&&&&&&&&&&01134.&&&&&01,134 km²)
State map highlighting Fulton County
Greene County 059 Waynesburg 1796 Parts of Washington County. Nathanael Greene, Revolutionary War general &&&&&&&&&&038686.&&&&&038,686 &&&&&&&&&&&&0578.&&&&&0578 sq mi
(&&&&&&&&&&&01497.&&&&&01,497 km²)
State map highlighting Greene County
Huntingdon County 061 Huntingdon 1787 Parts of Bedford County. The historic English county of Huntingdonshire &&&&&&&&&&045913.&&&&&045,913 &&&&&&&&&&&&0889.&&&&&0889 sq mi
(&&&&&&&&&&&02302.&&&&&02,302 km²)
State map highlighting Huntingdon County
Indiana County 063 Indiana 1803 Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806. Native Americans &&&&&&&&&&088880.&&&&&088,880 &&&&&&&&&&&&0834.&&&&&0834 sq mi
(&&&&&&&&&&&02160.&&&&&02,160 km²)
State map highlighting Indiana County
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 &&&&&&&&&&045200.&&&&&045,200 &&&&&&&&&&&&0657.&&&&&0657 sq mi
(&&&&&&&&&&&01702.&&&&&01,702 km²)
State map highlighting Jefferson County
Juniata County 067 Mifflintown 1831 Parts of Mifflin County. Juniata River, itself named for the Iroquoian word Onayutta, meaning "Standing Stone" &&&&&&&&&&024636.&&&&&024,636 &&&&&&&&&&&&0394.&&&&&0394 sq mi
(&&&&&&&&&&&01020.&&&&&01,020 km²)
State map highlighting Juniata County
Lackawanna County 069 Scranton 1878 Parts of Luzerne County. Lackawanna River, itself named for the Lenape word meaning "stream that forks" &&&&&&&&&0214437.&&&&&0214,437 &&&&&&&&&&&&0465.&&&&&0465 sq mi
(&&&&&&&&&&&01204.&&&&&01,204 km²)
State map highlighting Lackawanna County
Lancaster County 071 Lancaster 1729 Parts of Chester County. The English city of Lancaster &&&&&&&&&0519445.&&&&&0519,445 &&&&&&&&&&&&0984.&&&&&0984 sq mi
(&&&&&&&&&&&02549.&&&&&02,549 km²)
State map highlighting Lancaster County
Lawrence County 073 New Castle 1849 Parts of Beaver and Mercer Counties. James Lawrence, War of 1812 captain &&&&&&&&&&091108.&&&&&091,108 &&&&&&&&&&&&0363.&&&&&0363 sq mi
(&&&&&&&&&&&&0940.&&&&&0940 km²)
State map highlighting Lawrence County
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 &&&&&&&&&0133568.&&&&&0133,568 &&&&&&&&&&&&0363.&&&&&0363 sq mi
(&&&&&&&&&&&&0940.&&&&&0940 km²)
State map highlighting Lebanon County
Lehigh County 077 Allentown 1812 Parts of Northampton County. Lehigh River &&&&&&&&&0349497.&&&&&0349,497 &&&&&&&&&&&&0349.&&&&&0349 sq mi
(&&&&&&&&&&&&0904.&&&&&0904 km²)
State map highlighting Lehigh County
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 &&&&&&&&&0320918.&&&&&0320,918 &&&&&&&&&&&&0907.&&&&&0907 sq mi
(&&&&&&&&&&&02349.&&&&&02,349 km²)
State map highlighting Luzerne County
Lycoming County 081 Williamsport 1795 Parts of Northumberland County. Lycoming Creek, itself named for the Lenape word iacomic meaning "great steam" &&&&&&&&&0116111.&&&&&0116,111 &&&&&&&&&&&01244.&&&&&01,244 sq mi
(&&&&&&&&&&&03222.&&&&&03,222 km²)
State map highlighting Lycoming County
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 &&&&&&&&&&043450.&&&&&043,450 &&&&&&&&&&&&0984.&&&&&0984 sq mi
(&&&&&&&&&&&02549.&&&&&02,549 km²)
State map highlighting McKean County
Mercer County 085 Mercer 1800 Parts of Allegheny County. Hugh Mercer, Revolutionary War general &&&&&&&&&0116638.&&&&&0116,638 &&&&&&&&&&&&0683.&&&&&0683 sq mi
(&&&&&&&&&&&01769.&&&&&01,769 km²)
State map highlighting Mercer County
Mifflin County 087 Lewistown 1789 Parts of Cumberland and Northumberland Counties. Thomas Mifflin, first Governor of Pennsylvania &&&&&&&&&&046682.&&&&&046,682 &&&&&&&&&&&&0415.&&&&&0415 sq mi
(&&&&&&&&&&&01075.&&&&&01,075 km²)
State map highlighting Mifflin County
Monroe County 089 Stroudsburg 1836 Parts of Pike and Northampton Counties. James Monroe, fifth U.S President &&&&&&&&&0169842.&&&&&0169,842 &&&&&&&&&&&&0617.&&&&&0617 sq mi
(&&&&&&&&&&&01598.&&&&&01,598 km²)
State map highlighting Monroe County
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 0Expression error: Unrecognized punctuation character ","..Expression error: Unrecognized punctuation character ",".799,874 &&&&&&&&&&&&0487.&&&&&0487 sq mi
(&&&&&&&&&&&01261.&&&&&01,261 km²)
State map highlighting Montgomery County
Montour County 093 Danville 1850 Parts of Columbia County. Madame Montour, colonial ambassador to the Native Americans &&&&&&&&&&018267.&&&&&018,267 &&&&&&&&&&&&0132.&&&&&0132 sq mi
(&&&&&&&&&&&&0342.&&&&&0342 km²)
State map highlighting Montour County
Northampton County 095 Easton 1752 Parts of Bucks County. The English city of Northampton &&&&&&&&&0297735.&&&&&0297,735 &&&&&&&&&&&&0377.&&&&&0377 sq mi
(&&&&&&&&&&&&0976.&&&&&0976 km²)
State map highlighting Northampton County
Northumberland County 097 Sunbury 1772 Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties. The English county of Northumberland &&&&&&&&&&094528.&&&&&094,528 &&&&&&&&&&&&0477.&&&&&0477 sq mi
(&&&&&&&&&&&01235.&&&&&01,235 km²)
State map highlighting Northumberland County
Perry County 099 New Bloomfield 1820 Parts of Cumberland County. Oliver Hazard Perry, War of 1812 commodore &&&&&&&&&&045969.&&&&&045,969 &&&&&&&&&&&&0556.&&&&&0556 sq mi
(&&&&&&&&&&&01440.&&&&&01,440 km²)
State map highlighting Perry County
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") &&&&&&&&01526006.&&&&&01,526,006 &&&&&&&&&&&&0143.&&&&&0143 sq mi
(&&&&&&&&&&&&0370.&&&&&0370 km²)
State map highlighting Philadelphia County
Pike County 103 Milford 1814 Parts of Wayne County. Zebulon Pike, explorer of the American West &&&&&&&&&&057369.&&&&&057,369 &&&&&&&&&&&&0567.&&&&&0567 sq mi
(&&&&&&&&&&&01469.&&&&&01,469 km²)
State map highlighting Pike County
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 &&&&&&&&&&017457.&&&&&017,457 &&&&&&&&&&&01081.&&&&&01,081 sq mi
(&&&&&&&&&&&02800.&&&&&02,800 km²)
State map highlighting Potter County
Schuylkill County 107 Pottsville 1811 Parts of Berks and Northampton Counties. Schuylkill River, itself a Dutch corruption of a Lenape word possibly meaning "hidden river" &&&&&&&&&0148289.&&&&&0148,289 &&&&&&&&&&&&0778.&&&&&0778 sq mi
(&&&&&&&&&&&02015.&&&&&02,015 km²)
State map highlighting Schuylkill County
Snyder County 109 Middleburg 1855 Parts of Union County. Simon Snyder, third Governor of Pennsylvania &&&&&&&&&&039702.&&&&&039,702 &&&&&&&&&&&&0332.&&&&&0332 sq mi
(&&&&&&&&&&&&0860.&&&&&0860 km²)
State map highlighting Snyder County
Somerset County 111 Somerset 1795 Parts of Bedford County. The historic English county of Somerset &&&&&&&&&&077742.&&&&&077,742 &&&&&&&&&&&01081.&&&&&01,081 sq mi
(&&&&&&&&&&&02800.&&&&&02,800 km²)
State map highlighting Somerset County
Sullivan County 113 Laporte 1847 Parts of Lycoming County; attached to Lycoming until 1848. John Sullivan, Revolutionary War general &&&&&&&&&&&06428.&&&&&06,428 &&&&&&&&&&&&0452.&&&&&0452 sq mi
(&&&&&&&&&&&01171.&&&&&01,171 km²)
State map highlighting Sullivan County
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" &&&&&&&&&&043356.&&&&&043,356 &&&&&&&&&&&&0832.&&&&&0832 sq mi
(&&&&&&&&&&&02155.&&&&&02,155 km²)
State map highlighting Susquehanna County
Tioga County 117 Wellsboro 1804 Parts of Lycoming County; attached to Lycoming until 1812. Tioga River, itself named for the Lenape word for "forks of the stream" &&&&&&&&&&041981.&&&&&041,981 &&&&&&&&&&&01137.&&&&&01,137 sq mi
(&&&&&&&&&&&02945.&&&&&02,945 km²)
State map highlighting Tioga County
Union County 119 Lewisburg 1813 Parts of Northumberland County. The federal union of the states &&&&&&&&&&044947.&&&&&044,947 &&&&&&&&&&&&0317.&&&&&0317 sq mi
(&&&&&&&&&&&&0821.&&&&&0821 km²)
State map highlighting Union County
Venango County 121 Franklin 1800 Parts of Allegheny and Lycoming Counties; attached to until 1805. A corruption of the Lenape word onenge, meaning "otter" &&&&&&&&&&054984.&&&&&054,984 &&&&&&&&&&&&0683.&&&&&0683 sq mi
(&&&&&&&&&&&01769.&&&&&01,769 km²)
State map highlighting Venango County
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 &&&&&&&&&&041815.&&&&&041,815 &&&&&&&&&&&&0898.&&&&&0898 sq mi
(&&&&&&&&&&&02326.&&&&&02,326 km²)
State map highlighting Warren County
Washington County 125 Washington 1781 Parts of Westmoreland County. George Washington, first U.S. President &&&&&&&&&0207820.&&&&&0207,820 &&&&&&&&&&&&0861.&&&&&0861 sq mi
(&&&&&&&&&&&02230.&&&&&02,230 km²)
State map highlighting Washington County
Wayne County 127 Honesdale 1798 Parts of Northampton County. Anthony Wayne, Revolutionary War general &&&&&&&&&&052822.&&&&&052,822 &&&&&&&&&&&&0751.&&&&&0751 sq mi
(&&&&&&&&&&&01945.&&&&&01,945 km²)
State map highlighting Wayne County
Westmoreland County 129 Greensburg 1773 Parts of Bedford County. The historic English county of Westmorland &&&&&&&&&0365169.&&&&&0365,169 &&&&&&&&&&&01036.&&&&&01,036 sq mi
(&&&&&&&&&&&02683.&&&&&02,683 km²)
State map highlighting Westmoreland County
Wyoming County 131 Tunkhannock 1842 Parts of Luzerne County. The Delaware word xwéːwaməŋk, meaning "at the big river flat" &&&&&&&&&&028276.&&&&&028,276 &&&&&&&&&&&&0405.&&&&&0405 sq mi
(&&&&&&&&&&&01049.&&&&&01,049 km²)
State map highlighting Wyoming County
York County 133 York 1749 Parts of Lancaster County. The English city of York &&&&&&&&&0434972.&&&&&0434,972 &&&&&&&&&&&&0910.&&&&&0910 sq mi
(&&&&&&&&&&&02357.&&&&&02,357 km²)
State map highlighting York County

References[change | edit source]

  1. "EPA County FIPS Code Listing". US Environmental Protection Agency. http://www.epa.gov/enviro/html/codes/pa.html. Retrieved July 24, 2007.
  2. "EPA County FIPS Code Listing". EPA.gov. http://www.epa.gov/enviro/html/codes/pa.html. Retrieved 2008-02-23.
  3. 3.0 3.1 3.2 National Association of Counties. "NACo - Find a county". http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/state.cfm&state.cfm&statecode=PA. Retrieved 2008-04-30.
  4. "Pennsylvania Counties". Pennsylvania State Archives. http://www.phmc.state.pa.us/bah/dam/counties/county.asp?secid=31. Retrieved 2009-09-14.
  5. http://factfinder2.census.gov