Pennsylvania 2019 Population By County
Updated on June 22, 2021.

According to the US Census Bureau population estimates, there were 12,801,989 people living in Pennsylvania in 2019. Philadelphia County was the most populated county with 1,584,064 residents, followed by Allegheny County with 1,216,045 residents, and Montgomery County with 830,915 residents. Cameron County with a population of 4,447 was the least populated county in Pennsylvania in 2019.

Use the map below to interactively explore the population of each county in Pennsylvania in 2019. The data can also be explored further by sorting and filtering with the table below.

Pennsylvania 2019 Population By County
See also Population estimate for other years:
Table of Pennsylvania 2019 Population By County
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County Population % of State Population
Adams 103,009 0.81%
Allegheny 1,216,045 9.50%
Armstrong 64,735 0.51%
Beaver 163,929 1.28%
Bedford 47,888 0.37%
Berks 421,164 3.29%
Blair 121,829 0.95%
Bradford 60,323 0.47%
Bucks 628,270 4.91%
Butler 187,853 1.47%
Cambria 130,192 1.02%
Cameron 4,447 0.04%
Carbon 64,182 0.50%
Centre 162,385 1.27%
Chester 524,989 4.10%
Clarion 38,438 0.30%
Clearfield 79,255 0.62%
Clinton 38,632 0.30%
Columbia 64,964 0.51%
Crawford 84,629 0.66%
Cumberland 253,370 1.98%
Dauphin 278,299 2.17%
Delaware 566,747 4.43%
Elk 29,910 0.23%
Erie 269,728 2.11%
Fayette 129,274 1.01%
Forest 7,247 0.06%
Franklin 155,027 1.21%
Fulton 14,530 0.11%
Greene 36,233 0.28%
Huntingdon 45,144 0.35%
Indiana 84,073 0.66%
Jefferson 43,425 0.34%
Juniata 24,763 0.19%
Lackawanna 209,674 1.64%
Lancaster 545,724 4.26%
Lawrence 85,512 0.67%
Lebanon 141,793 1.11%
Lehigh 369,318 2.89%
Luzerne 317,417 2.48%
Lycoming 113,299 0.89%
McKean 40,625 0.32%
Mercer 109,424 0.86%
Mifflin 46,138 0.36%
Monroe 170,271 1.33%
Montgomery 830,915 6.49%
Montour 18,230 0.14%
Northampton 305,285 2.38%
Northumberland 90,843 0.71%
Perry 46,272 0.36%
Philadelphia 1,584,064 12.37%
Pike 55,809 0.44%
Potter 16,526 0.13%
Schuylkill 141,359 1.10%
Snyder 40,372 0.32%
Somerset 73,447 0.57%
Sullivan 6,066 0.05%
Susquehanna 40,328 0.32%
Tioga 40,591 0.32%
Union 44,923 0.35%
Venango 50,668 0.40%
Warren 39,191 0.31%
Washington 206,865 1.62%
Wayne 51,361 0.40%
Westmoreland 348,899 2.73%
Wyoming 26,794 0.21%
York 449,058 3.51%