Pennsylvania Population By County in 2016

Updated on January 27, 2024.

Based on the US Census Vintage data estimates, in 2016, the population of Pennsylvania was 12,788,468. Among all Pennsylvania counties, Philadelphia had the highest population (1,576,604), followed by Allegheny (1,226,893), and Montgomery (820,106). Cameron was the least populated county (4,702).

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.

See this for other years:
Pennsylvania Population By County in 2016
Pennsylvania Population By County in 2016
Items per page:
0 of 0
County Population % of State Population
Adams 101952 0.80
Allegheny 1226893 9.59
Armstrong 66464 0.52
Beaver 166926 1.31
Bedford 48592 0.38
Berks 415911 3.25
Blair 123779 0.97
Bradford 61103 0.48
Bucks 626369 4.90
Butler 186427 1.46
Cambria 134517 1.05
Cameron 4702 0.04
Carbon 63561 0.50
Centre 162287 1.27
Chester 516768 4.04
Clarion 38607 0.30
Clearfield 80190 0.63
Clinton 39009 0.31
Columbia 66171 0.52
Crawford 86353 0.68
Cumberland 247633 1.94
Dauphin 274305 2.15
Delaware 563860 4.41
Elk 30516 0.24
Erie 276639 2.16
Fayette 132371 1.03
Forest 7334 0.06
Franklin 153938 1.20
Fulton 14502 0.11
Greene 37222 0.29
Huntingdon 45411 0.36
Indiana 85243 0.67
Jefferson 44041 0.34
Juniata 24554 0.19
Lackawanna 211108 1.65
Lancaster 538303 4.21
Lawrence 87379 0.68
Lebanon 138481 1.08
Lehigh 362357 2.83
Luzerne 317192 2.48
Lycoming 114958 0.90
McKean 41701 0.33
Mercer 112651 0.88
Mifflin 46289 0.36
Monroe 166324 1.30
Montgomery 820106 6.41
Montour 18241 0.14
Northampton 301629 2.36
Northumberland 92336 0.72
Perry 45937 0.36
Philadelphia 1576604 12.33
Pike 55040 0.43
Potter 16953 0.13
Schuylkill 143492 1.12
Snyder 40457 0.32
Somerset 74890 0.59
Sullivan 6123 0.05
Susquehanna 41268 0.32
Tioga 41295 0.32
Union 45527 0.36
Venango 52487 0.41
Warren 40039 0.31
Washington 207469 1.62
Wayne 51350 0.40
Westmoreland 354763 2.77
Wyoming 27557 0.22
York 444012 3.47