Pennsylvania Citizen Population By County in 2017 (ACS-5Yrs)
Updated on March 28, 2026.
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2017, the citizen population for Pennsylvania was 12,387,350 and represented 96.85% of the total Pennsylvania population.
Among all Pennsylvania counties, Philadelphia had the highest citizen population (1.46M), followed by Allegheny (1.19M), and Montgomery (780.73K).
In terms of percentages, Fulton had the highest percentage of its population being citizens (99.80%), followed by Jefferson (99.79%), and Armstrong (99.77%).
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.
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Data Source: US Census - ACS 5-Year (CVAP).
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Pennsylvania Citizen Population By County in 2017
Pennsylvania Citizen Population By County in 2017
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| County | Citizen Population | % of County Population |
|---|---|---|
| Philadelphia | 1463940 | 93.27 |
| Allegheny | 1191485 | 96.90 |
| Montgomery | 780725 | 95.36 |
| Bucks | 606780 | 96.86 |
| Delaware | 538105 | 95.51 |
| Lancaster | 524755 | 97.81 |
| Chester | 486855 | 94.60 |
| York | 434425 | 98.24 |
| Berks | 400380 | 96.36 |
| Westmoreland | 355055 | 99.50 |
| Lehigh | 344045 | 95.36 |
| Luzerne | 307830 | 96.74 |
| Northampton | 292340 | 97.14 |
| Erie | 271040 | 97.57 |
| Dauphin | 263005 | 96.22 |
| Cumberland | 238400 | 96.99 |
| Washington | 205890 | 99.15 |
| Lackawanna | 205575 | 96.99 |
| Butler | 184215 | 99.05 |
| Beaver | 167400 | 99.55 |
| Monroe | 161680 | 96.64 |
| Centre | 151200 | 94.12 |
| Franklin | 150235 | 98.19 |
| Schuylkill | 142770 | 98.95 |
| Lebanon | 135240 | 98.27 |
| Cambria | 135120 | 99.45 |
| Fayette | 132410 | 99.44 |
| Blair | 124230 | 99.60 |
| Lycoming | 114400 | 99.13 |
| Mercer | 112790 | 99.27 |
| Adams | 98965 | 97.42 |
| Northumberland | 92720 | 99.66 |
| Lawrence | 87905 | 99.63 |
| Crawford | 86340 | 99.42 |
| Indiana | 85765 | 99.09 |
| Clearfield | 78540 | 97.52 |
| Somerset | 75230 | 99.48 |
| Armstrong | 66580 | 99.77 |
| Columbia | 65880 | 98.90 |
| Carbon | 63505 | 99.25 |
| Bradford | 61300 | 99.60 |
| Pike | 54180 | 97.30 |
| Venango | 52710 | 99.68 |
| Wayne | 51160 | 99.04 |
| Bedford | 48765 | 99.74 |
| Mifflin | 46235 | 99.54 |
| Perry | 45525 | 99.23 |
| Huntingdon | 45315 | 99.19 |
| Union | 44205 | 98.11 |
| Jefferson | 44165 | 99.79 |
| McKean | 41750 | 99.24 |
| Susquehanna | 41440 | 99.34 |
| Tioga | 41350 | 99.52 |
| Snyder | 40245 | 99.20 |
| Warren | 40140 | 99.49 |
| Clinton | 39060 | 99.34 |
| Clarion | 38535 | 99.46 |
| Greene | 37230 | 99.71 |
| Elk | 30705 | 99.76 |
| Wyoming | 27655 | 99.62 |
| Juniata | 24175 | 98.88 |
| Montour | 18000 | 98.36 |
| Potter | 17025 | 99.74 |
| Fulton | 14600 | 99.80 |
| Forest | 7310 | 98.92 |
| Sullivan | 6120 | 98.87 |
| Cameron | 4700 | 98.84 |
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