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QuickFacts provides statistics for all states and counties. Also for cities and towns with a population of 5,000 or more.
Chart
Population estimates, July 1, 2025, (V2025)
0
160,000
320,000
480,000
640,000
800,000
960,000
1,120,000
1,280,000
1,440,000
1,600,000
Philadelphia County, Pennsylvania
1,574,281
Allegheny County, Pennsylvania
1,225,035
Montgomery County, Pennsylvania
877,643
Bucks County, Pennsylvania
647,828
Delaware County, Pennsylvania
580,937
Lancaster County, Pennsylvania
563,159
Chester County, Pennsylvania
557,116
York County, Pennsylvania
473,197
Berks County, Pennsylvania
440,072
Lehigh County, Pennsylvania
384,383
Westmoreland County, Pennsylvania
349,324
Luzerne County, Pennsylvania
332,126
Northampton County, Pennsylvania
324,411
Dauphin County, Pennsylvania
293,351
Cumberland County, Pennsylvania
277,270
Erie County, Pennsylvania
265,832
Lackawanna County, Pennsylvania
216,502
Washington County, Pennsylvania
210,802
Butler County, Pennsylvania
200,169
Monroe County, Pennsylvania
167,179
Beaver County, Pennsylvania
166,032
Franklin County, Pennsylvania
160,652
Centre County, Pennsylvania
157,393
Lebanon County, Pennsylvania
146,380
Schuylkill County, Pennsylvania
145,085
Cambria County, Pennsylvania
128,968
Fayette County, Pennsylvania
123,021
Blair County, Pennsylvania
119,541
Lycoming County, Pennsylvania
112,587
Mercer County, Pennsylvania
107,860
Adams County, Pennsylvania
107,594
Northumberland County, Pennsylvania
89,920
Lawrence County, Pennsylvania
83,911
Indiana County, Pennsylvania
82,878
Crawford County, Pennsylvania
81,792
Clearfield County, Pennsylvania
78,100
Somerset County, Pennsylvania
72,004
Columbia County, Pennsylvania
66,193
Carbon County, Pennsylvania
65,868
Armstrong County, Pennsylvania
63,698
Pike County, Pennsylvania
62,808
Bradford County, Pennsylvania
59,600
Wayne County, Pennsylvania
51,703
Venango County, Pennsylvania
49,346
Bedford County, Pennsylvania
47,480
Perry County, Pennsylvania
46,806
Mifflin County, Pennsylvania
46,127
Jefferson County, Pennsylvania
43,255
Huntingdon County, Pennsylvania
43,001
Union County, Pennsylvania
42,313
Tioga County, Pennsylvania
40,502
Snyder County, Pennsylvania
39,655
McKean County, Pennsylvania
38,984
Susquehanna County, Pennsylvania
38,237
Clinton County, Pennsylvania
37,870
Warren County, Pennsylvania
37,038
Clarion County, Pennsylvania
36,680
Greene County, Pennsylvania
33,885
Elk County, Pennsylvania
29,926
Wyoming County, Pennsylvania
25,790
Juniata County, Pennsylvania
23,403
Montour County, Pennsylvania
17,868
Potter County, Pennsylvania
15,897
Fulton County, Pennsylvania
14,483
Forest County, Pennsylvania
6,614
Sullivan County, Pennsylvania
5,856
Cameron County, Pennsylvania
4,211
0
160,000
320,000
480,000
640,000
800,000
960,000
1,120,000
1,280,000
1,440,000
1,600,000
Value Notes
Methodology differences may exist between data sources, and so estimates from different sources are not comparable.
Some estimates presented here come from sample data, and thus have sampling errors that may render some apparent differences between geographies statistically
indistinguishable. Click the Quick Info icon to the left of each row in TABLE view to learn about sampling error.
The vintage year (e.g., V2025) refers to the final year of the series (2020 thru 2025). Different vintage years of estimates are not comparable.
Users should exercise caution when comparing 2020-2024 ACS 5-year estimates to other ACS estimates. For more information, please visit
the 2024 5-year ACS Comparison Guidance page.
(b)Hispanics may be of any race, so also are included in applicable race categories
(c)Economic Census - Puerto Rico data are not comparable to U.S. Economic Census data
Value Flags
DSuppressed to avoid disclosure of confidential information
FFewer than 25 firms
FNFootnote on this item in place of data
NANot available
SSuppressed; does not meet publication standards
XNot applicable
ZValue greater than zero but less than half unit of measure shown
-Either no or too few sample observations were available to compute an estimate, or a ratio of medians cannot be calculated because one or both of the median estimates falls in the lowest or upper interval of an open ended distribution.
NData for this geographic area cannot be displayed because the number of sample cases is too small.
QuickFacts data are derived from: Population Estimates, American Community Survey, Census of Population and Housing, Current Population Survey, Small Area Health Insurance Estimates, Small Area Income and Poverty Estimates, State and County Housing Unit Estimates, County Business Patterns, Nonemployer Statistics, Economic Census, Annual Business Survey, Building Permits.
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