Pennsylvania Citizen Population By County in 2012 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2012, the citizen population for Pennsylvania was 12,334,140 and represented 97.12% of the total Pennsylvania population.

Among all Pennsylvania counties, Philadelphia had the highest citizen population (1.43M), followed by Allegheny (1.19M), and Montgomery (764.03K).

In terms of percentages, Elk had the highest percentage of its population being citizens (99.83%), followed by Potter (99.80%), and Venango (99.75%).

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 2012

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

See this for other years:

Pennsylvania Citizen Population By County in 2012

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County	Citizen Population	% of County Population
Philadelphia	1433650	93.96
Allegheny	1193870	97.48
Montgomery	764030	95.52
Bucks	606320	96.94
Delaware	535335	95.79
Lancaster	508730	97.85
Chester	473705	94.83
York	427305	98.33
Berks	395480	96.20
Westmoreland	363195	99.54
Lehigh	334440	95.51
Luzerne	311555	97.19
Northampton	288550	96.99
Erie	274435	97.95
Dauphin	259205	96.76
Cumberland	229520	97.54
Lackawanna	208385	97.22
Washington	206595	99.37
Butler	182515	99.22
Beaver	169555	99.38
Monroe	163485	96.54
Centre	146465	95.26
Schuylkill	146450	99.00
Franklin	146405	97.89
Cambria	142395	99.37
Fayette	136280	99.54
Lebanon	131475	98.42
Blair	126485	99.49
Lycoming	115830	99.47
Mercer	115810	99.43
Adams	98795	97.48
Northumberland	93810	99.33
Lawrence	90520	99.60
Crawford	88080	99.54
Indiana	87735	98.97
Clearfield	80700	98.81
Somerset	77440	99.74
Armstrong	68730	99.70
Columbia	66255	98.91
Carbon	64430	98.97
Bradford	62165	99.26
Pike	56150	97.76
Venango	54730	99.75
Wayne	51665	98.79
Bedford	49530	99.70
Mifflin	46550	99.69
Huntingdon	45690	99.48
Perry	45540	99.45
Jefferson	44930	99.73
Union	43660	97.14
McKean	43195	99.41
Susquehanna	42910	99.40
Tioga	41920	99.62
Warren	41455	99.62
Clarion	39775	99.46
Snyder	39380	99.39
Clinton	38920	99.13
Greene	38495	99.69
Elk	31925	99.83
Wyoming	27990	99.19
Juniata	24420	99.01
Montour	17940	98.33
Potter	17430	99.80
Fulton	14790	99.73
Forest	7620	99.41
Sullivan	6380	98.84
Cameron	5030	99.41