Pennsylvania Population By County in 2013

Updated on January 27, 2024.

Based on the US Census Vintage data estimates, in 2013, the population of Pennsylvania was 12,779,538. Among all Pennsylvania counties, Philadelphia[object Promise] had the highest population (1,558,713), followed by Allegheny[object Promise] (1,233,999), and Montgomery[object Promise] (812,750). Cameron[object Promise] was the least populated county (4,927).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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Pennsylvania Population By County in 2013
Pennsylvania Population By County in 2013
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County Population % of State Population
Adams 101156 0.79
Allegheny 1233999 9.66
Armstrong 68015 0.53
Beaver 169770 1.33
Bedford 49317 0.39
Berks 413975 3.24
Blair 125869 0.99
Bradford 62519 0.49
Bucks 625325 4.89
Butler 185185 1.45
Cambria 138858 1.09
Cameron 4927 0.04
Carbon 64545 0.51
Centre 158342 1.24
Chester 509101 3.98
Clarion 39087 0.31
Clearfield 81444 0.64
Clinton 39835 0.31
Columbia 67203 0.53
Crawford 87532 0.69
Cumberland 241153 1.89
Dauphin 271500 2.12
Delaware 561635 4.39
Elk 31462 0.25
Erie 280905 2.20
Fayette 134610 1.05
Forest 7532 0.06
Franklin 152005 1.19
Fulton 14622 0.11
Greene 37880 0.30
Huntingdon 45847 0.36
Indiana 88178 0.69
Jefferson 44879 0.35
Juniata 24478 0.19
Lackawanna 213797 1.67
Lancaster 530109 4.15
Lawrence 89274 0.70
Lebanon 135803 1.06
Lehigh 355273 2.78
Luzerne 319737 2.50
Lycoming 116626 0.91
McKean 42819 0.34
Mercer 115162 0.90
Mifflin 46636 0.37
Monroe 167435 1.31
Montgomery 812750 6.36
Montour 18398 0.14
Northampton 299066 2.34
Northumberland 93884 0.74
Perry 45650 0.36
Philadelphia 1558713 12.20
Pike 56126 0.44
Potter 17446 0.14
Schuylkill 146674 1.15
Snyder 40133 0.31
Somerset 76607 0.60
Sullivan 6303 0.05
Susquehanna 42399 0.33
Tioga 42252 0.33
Union 44773 0.35
Venango 53814 0.42
Warren 40963 0.32
Washington 208117 1.63
Wayne 52204 0.41
Westmoreland 360720 2.82
Wyoming 28144 0.22
York 439041 3.44