Pennsylvania Citizen Population By County in 2023 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2023, the citizen population for Pennsylvania was 12,558,570 and represented 96.71% of the total Pennsylvania population.

Among all Pennsylvania counties, Philadelphia had the highest citizen population (1.47M), followed by Allegheny (1.20M), and Montgomery (822.84K).

In terms of percentages, Mifflin had the highest percentage of its population being citizens (99.81%), followed by Cameron (99.78%), and Jefferson (99.71%).

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 2023

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

See this for other years:

Pennsylvania Citizen Population By County in 2023

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County	Citizen Population	% of County Population
Philadelphia	1470300	92.91
Allegheny	1200705	96.79
Montgomery	822840	95.54
Bucks	623610	96.54
Delaware	551230	95.67
Lancaster	543220	97.85
Chester	514600	95.14
York	450330	98.05
Berks	412755	95.99
Lehigh	352235	93.83
Westmoreland	351095	99.36
Luzerne	311145	95.45
Northampton	306190	96.92
Dauphin	275590	95.86
Erie	264555	98.15
Cumberland	256190	96.89
Lackawanna	209795	97.20
Washington	207700	99.01
Butler	194260	99.18
Beaver	165965	99.38
Monroe	162645	96.94
Franklin	153490	98.00
Centre	149255	94.44
Schuylkill	141685	98.90
Lebanon	141375	98.46
Cambria	131830	99.60
Fayette	125970	99.22
Blair	120990	99.29
Lycoming	112495	99.05
Mercer	109420	99.61
Adams	103390	98.29
Northumberland	90105	99.10
Lawrence	84900	99.39
Crawford	82805	99.54
Indiana	82015	98.56
Clearfield	77915	98.75
Somerset	72970	99.61
Armstrong	64835	99.64
Carbon	64565	99.04
Columbia	64565	99.25
Bradford	59410	99.07
Pike	58375	97.80
Wayne	50735	99.11
Venango	49920	99.65
Bedford	47305	99.58
Mifflin	45985	99.81
Perry	45640	99.24
Jefferson	43970	99.71
Huntingdon	43615	99.48
Union	41445	97.36
Tioga	40945	99.67
McKean	39735	98.97
Snyder	39500	99.47
Susquehanna	38045	99.21
Warren	38020	99.59
Clinton	37525	99.52
Clarion	37100	99.48
Greene	35115	99.58
Elk	30560	99.53
Wyoming	25880	99.25
Juniata	23030	98.34
Montour	17520	96.90
Potter	16195	99.51
Fulton	14490	99.62
Forest	6695	98.67
Sullivan	5820	99.49
Cameron	4465	99.78