Pennsylvania Counties by Population (2024)

Population

200K

400K

600K

800K

1M

1.2M

1.4M

Hover/click a county for data.

67 counties

County
2024 Pop.
Change (2020)
Area (mi²)
Density (/mi²)
Location
Philadelphia County1,534,248-4.15%5211,450Philadelphia County location
Allegheny County1,217,045-2.6%2821,667Allegheny County location
Montgomery County872,4401.8%1861,806Montgomery County location
Bucks County646,4110.04%2331,070Bucks County location
Delaware County577,5670.21%713,139Delaware County location
Lancaster County560,5181.39%364594Lancaster County location
Chester County552,9303.38%290736Chester County location
York County468,2312.52%349518York County location
Berks County434,0691.26%330507Berks County location
Lehigh County379,2341.26%1331,099Lehigh County location
Westmoreland County350,328-1.13%397341Westmoreland County location
Luzerne County328,2800.94%344369Luzerne County location
Northampton County320,2822.4%143866Northampton County location
Dauphin County289,7811.07%203552Dauphin County location
Cumberland County272,9444.87%210501Cumberland County location
Erie County266,302-1.58%308333Erie County location
Lackawanna County216,4960.44%177472Lackawanna County location
Washington County210,5240.52%331246Washington County location
Butler County199,4582.77%305253Butler County location
Beaver County165,525-1.4%168381Beaver County location
Monroe County164,655-2.17%235271Monroe County location
Franklin County158,7571.8%298206Franklin County location
Centre County158,0570.05%427143Centre County location
Lebanon County144,6020.92%140399Lebanon County location
Schuylkill County144,3840.99%301185Schuylkill County location
Cambria County129,907-2.48%266189Cambria County location
Fayette County122,462-4.76%305155Fayette County location
Blair County119,812-2.33%203228Blair County location
Lycoming County112,414-1.5%47491Lycoming County location
Mercer County107,869-2.43%260160Mercer County location
Adams County107,5373.6%200207Adams County location
Northumberland County90,117-1.56%177197Northumberland County location
Lawrence County84,132-2.14%138236Lawrence County location
Indiana County83,124-0.03%319101Indiana County location
Crawford County81,597-2.64%39181Crawford County location
Clearfield County76,356-5.07%44267Clearfield County location
Somerset County71,765-3.05%41567Somerset County location
Columbia County65,5891.4%186136Columbia County location
Carbon County65,4231.04%147172Carbon County location
Armstrong County63,444-3.09%25297Armstrong County location
Pike County61,9185.71%210114Pike County location
Bradford County59,536-0.72%44352Bradford County location
Wayne County51,4400.56%28071Wayne County location
Venango County49,128-2.46%26073Venango County location
Bedford County47,279-0.61%39147Bedford County location
Perry County46,0530.5%21384Perry County location
Mifflin County45,860-0.6%159112Mifflin County location
Huntingdon County43,731-0.72%33850Huntingdon County location
Jefferson County43,493-2.23%25267Jefferson County location
Union County41,394-2.94%122131Union County location
Tioga County40,713-0.76%43836Tioga County location
Snyder County39,9280.49%127121Snyder County location
McKean County39,219-2.92%37840McKean County location
Susquehanna County38,079-0.7%31846Susquehanna County location
Clinton County37,4380.18%34442Clinton County location
Warren County37,326-3.08%34142Warren County location
Clarion County36,713-1.31%23261Clarion County location
Greene County34,185-4.69%22259Greene County location
Elk County29,929-3.29%31936Elk County location
Wyoming County25,780-0.97%15365Wyoming County location
Juniata County23,205-1.19%15159Juniata County location
Montour County17,666-2.56%50136Montour County location
Potter County15,792-3.61%41715Potter County location
Fulton County14,382-1.35%16933Fulton County location
Forest County6,295-9.53%16515Forest County location
Sullivan County5,823-0.09%17413Sullivan County location
Cameron County4,354-3.82%15311Cameron County location
  1. Pennsylvania State Data Center
  2. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  3. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  4. American Community Survey (2009 - 2013)
  5. Census QuickFacts
  6. Historical Populations of States and Counties (1790 - 1990)

Sources