Pennsylvania Citizen Population By County in 2011 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2011, the citizen population for Pennsylvania was 12,299,320 and represented 97.15% of the total Pennsylvania population.

Among all Pennsylvania counties, Philadelphia had the highest citizen population (1.42M), followed by Allegheny (1.19M), and Montgomery (759.62K).

In terms of percentages, Potter had the highest percentage of its population being citizens (99.89%), followed by Greene (99.83%), and Elk (99.81%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

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

You may also be interested in:
Pennsylvania Citizen Voting-age Population By County in 2011

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Pennsylvania Citizen Population By County in 2011

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County	Citizen Population	% of County Population
Philadelphia	1422480	93.93
Allegheny	1193480	97.54
Montgomery	759615	95.56
Bucks	604635	96.84
Delaware	534245	95.80
Lancaster	504465	97.80
Chester	470265	94.88
York	424260	98.22
Berks	394720	96.36
Westmoreland	363485	99.47
Lehigh	331755	95.55
Luzerne	311875	97.49
Northampton	287270	96.94
Erie	274380	98.05
Dauphin	257910	96.75
Cumberland	227550	97.36
Lackawanna	208785	97.54
Washington	206320	99.46
Butler	181795	99.17
Beaver	170040	99.42
Monroe	162960	96.40
Schuylkill	146575	98.91
Centre	145805	95.49
Franklin	145335	98.04
Cambria	143430	99.27
Fayette	136980	99.40
Lebanon	130990	98.82
Blair	126400	99.46
Mercer	116080	99.27
Lycoming	115660	99.42
Adams	98410	97.31
Northumberland	93835	99.49
Lawrence	90905	99.52
Crawford	88595	99.48
Indiana	88010	98.89
Clearfield	81355	99.27
Somerset	77695	99.68
Armstrong	68985	99.68
Columbia	66345	98.99
Carbon	64285	98.94
Bradford	62110	99.34
Pike	55890	97.64
Venango	54945	99.71
Wayne	51925	98.95
Bedford	49725	99.72
Mifflin	46565	99.78
Huntingdon	45585	99.31
Perry	45575	99.54
Jefferson	45075	99.78
Union	43565	97.09
McKean	43445	99.55
Susquehanna	43080	99.47
Tioga	41710	99.67
Warren	41610	99.62
Clarion	39930	99.38
Snyder	39305	99.27
Greene	38830	99.83
Clinton	38735	99.28
Elk	32175	99.81
Wyoming	28120	99.24
Juniata	24250	99.22
Montour	17880	98.27
Potter	17465	99.89
Fulton	14780	99.46
Forest	7575	99.67
Sullivan	6420	99.23
Cameron	5080	99.03