Pennsylvania County Map, List of Counties in Pennsylvania with Seats

The U.S. state of Pennsylvania is divided into 67 Counties. Explore the Pennsylvania County Map, all Counties list along with their County Seats in alphabetical order and their population, areas and the date of formation.

Pennsylvania County Map

Pennsylvania County Map About Pennsylvania County Map: The map showing the county boundary, all counties boundary, state capital and neighbouring states.

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  • About Counties of Pennsylvania

    The U.S. state of Pennsylvania has 67 Counties. This is list of Pennsylvania Counties and County Seats in alphabetical order along with check their population, areas and the date of formation.

    List of Counties in Pennsylvania with County Seats

    S.NCountyCounty SeatPopulationArea Formed
    1Adams CountyGettysburg101,407522 sq mi1800
    2Allegheny CountyPittsburgh1,223,348745 sq mi1788
    3Armstrong CountyKittanning68,941664 sq mi1800
    4Beaver CountyBeaver170,539444 sq mi1800
    5Bedford CountyBedford49,7621,015 sq mi1771
    6Berks CountyReading411,442866 sq mi1752
    7Blair CountyHollidaysburg127,089527 sq mi1846
    8Bradford CountyTowanda62,6221,161 sq mi1810
    9Bucks CountyDoylestown625,249622 sq mi1682
    10Butler CountyButler183,862795 sq mi1800
    11Cambria CountyEbensburg143,679693 sq mi1804
    12Cameron CountyEmporium5,085399 sq mi1860
    13Carbon CountyJim Thorpe65,249387 sq mi1843
    14Centre CountyBellefonte153,9901,112 sq mi1800
    15Chester CountyWest Chester498,886760 sq mi1682
    16Clarion CountyClarion39,988609 sq mi1839
    17Clearfield CountyClearfield81,6421,154 sq mi1804
    18Clinton CountyLock Haven39,238898 sq mi1839
    19Columbia CountyBloomsburg67,295490 sq mi1813
    20Crawford CountyMeadville88,7651,038 sq mi1800
    21Cumberland CountyCarlisle235,406551 sq mi1750
    22Dauphin CountyHarrisburg268,100558 sq mi1785
    23Delaware CountyMedia558,979191 sq mi1789
    24Elk CountyRidgway31,946832 sq mi1843
    25Erie CountyErie280,566799 sq mi1800
    26Fayette CountyUniontown136,606798 sq mi1783
    27Forest CountyTionesta7,716431 sq mi1848
    28Franklin CountyChambersburg149,618771 sq mi1784
    29Fulton CountyMcConnellsburg14,845438 sq mi1850
    30Greene CountyWaynesburg38,686578 sq mi1796
    31Huntingdon CountyHuntingdon45,913889 sq mi1787
    32Indiana CountyIndiana88,880834 sq mi1803
    33Jefferson CountyBrookville45,200657 sq mi1804
    34Juniata CountyMifflintown24,636394 sq mi1831
    35Lackawanna CountyScranton214,437465 sq mi1878
    36Lancaster CountyLancaster519,445984 sq mi1729
    37Lawrence CountyNew Castle91,108363 sq mi1849
    38Lebanon CountyLebanon133,568363 sq mi1813
    39Lehigh CountyAllentown349,497349 sq mi1812
    40Luzerne CountyWilkes-Barre320,918907 sq mi1786
    41Lycoming CountyWilliamsport116,1111,244 sq mi1795
    42McKean CountySmethport43,450984 sq mi1804
    43Mercer CountyMercer116,638683 sq mi1800
    44Mifflin CountyLewistown46,682415 sq mi1789
    45Monroe CountyStroudsburg169,842617 sq mi1836
    46Montgomery CountyNorristown799,874487 sq mi1784
    47Montour CountyDanville18,267132 sq mi1850
    48Northampton CountyEaston297,735377 sq mi1752
    49Northumberland CountySunbury94,528477 sq mi1772
    50Perry CountyNew Bloomfield45,969556 sq mi1820
    51Philadelphia CountyPhiladelphia1,526,006143 sq mi1682
    52Pike CountyMilford57,369567 sq mi1814
    53Potter CountyCoudersport17,4571,081 sq mi1804
    54Schuylkill CountyPottsville148,289778 sq mi1811
    55Snyder CountyMiddleburg39,702332 sq mi1855
    56Somerset CountySomerset77,7421,081 sq mi1795
    57Sullivan CountyLaporte6,428452 sq mi1847
    58Susquehanna CountyMontrose43,356832 sq mi1810
    59Tioga CountyWellsboro41,9811,137 sq mi1804
    60Union CountyLewisburg44,947317 sq mi1813
    61Venango CountyFranklin54,984683 sq mi1800
    62Warren CountyWarren41,815898 sq mi1800
    63Washington CountyWashington207,820861 sq mi1781
    64Wayne CountyHonesdale52,822751 sq mi1798
    65Westmoreland CountyGreensburg365,1691,036 sq mi1773
    66Wyoming CountyTunkhannock28,276405 sq mi1842
    67York CountyYork434,972910 sq mi1749
    Edited by: Vijay Kanth | Updated: September 22, 2021