# Lijst van county's in Pennsylvania

De Amerikaanse staat Pennsylvania is onderverdeeld in 67 county's:
| County | Inwoners 1 juli 2007 | Hoofdplaats | Inwoners 1 juli 2007 |
| Adams | 100.779 | Gettysburg | 8065 |
| Allegheny | 1.219.210 | Pittsburgh | 311.218 |
| Armstrong | 69.059 | Kittanning | 4376 |
| Beaver | 173.074 | Beaver | 4401 |
| Bedford | 49.650 | Bedford | 3006 |
| Berks | 401.955 | Reading | 80.769 |
| Blair | 125.527 | Hollidaysburg | 5491 |
| Bradford | 61.471 | Towanda | 2847 |
| Bucks | 621.144 | Doylestown | 8149 |
| Butler | 181.934 | Butler | 14.040 |
| Cambria | 144.995 | Ebensburg | 2949 |
| Cameron | 5349 | Emporium | 2241 |
| Carbon | 63.242 | Jim Thorpe | 4878 |
| Centre | 144.658 | Bellefonte | 6184 |
| Chester | 486.345 | West Chester | 18.223 |
| Clarion | 40.028 | Clarion | 5271 |
| Clearfield | 81.452 | Clearfield | 6205 |
| Clinton | 37.213 | Lock Haven | 8651 |
| Columbia | 64.726 | Bloomsburg | 12.627 |
| Crawford | 88.663 | Meadville | 13.253 |
| Cumberland | 228.019 | Carlisle | 18.351 |
| Dauphin | 255.710 | Harrisburg | 47.196 |
| Delaware | 554.399 | Media | 5413 |
| Elk | 32.610 | Ridgway | 4150 |
| Erie | 279.092 | Erie | 103.650 |
| Fayette | 144.556 | Uniontown | 11.730 |
| Forest | 6955 | Tionesta | 583 |
| Franklin | 141.665 | Chambersburg | 17.940 |
| Fulton | 14.939 | McConnellsburg | 1044 |
| Greene | 39.503 | Waynesburg | 4167 |
| Huntingdon | 45.556 | Huntingdon | 6810 |
| Indiana | 87.690 | Indiana | 14.827 |
| Jefferson | 45.135 | Brookville | 4004 |
| Juniata | 23.168 | Mifflintown | 827 |
| Lackawanna | 209.330 | Scranton | 72.485 |
| Lancaster | 498.465 | Lancaster | 54.672 |
| Lawrence | 90.991 | New Castle | 24.411 |
| Lebanon | 128.889 | Lebanon | 24.124 |
| Lehigh | 337.343 | Allentown | 107.117 |
| Luzerne | 312.265 | Wilkes-Barre | 41.069 |
| Lycoming | 116.811 | Williamsport | 29.537 |
| McKean | 43.633 | Smethport | 1573 |
| Mercer | 116.809 | Mercer | 2224 |
| Mifflin | 46.941 | Lewistown | 8553 |
| Monroe | 164.722 | Stroudsburg | 6272 |
| Montgomery | 776.172 | Norristown | 31.108 |
| Montour | 17.817 | Danville | 4512 |
| Northampton | 293.522 | Easton | 26.094 |
| Northumberland | 91.003 | Sunbury | 9831 |
| Perry | 45.163 | New Bloomfield | --- |
| Philadelphia | 1.449.634 | Philadelphia | 1.449.634 |
| Pike | 58.633 | Milford | 1200 |
| Potter | 16.987 | Coudersport | 2416 |
| Schuylkill | 147.269 | Pottsville | 14.486 |
| Snyder | 38.113 | Middleburg | 1338 |
| Somerset | 77.861 | Somerset | 6398 |
| Sullivan | 6200 | Laporte | 268 |
| Susquehanna | 41.123 | Montrose | 1547 |
| Tioga | 40.681 | Wellsboro | 3250 |
| Union | 43.724 | Lewisburg | 5519 |
| Venango | 54.763 | Franklin | 6711 |
| Warren | 40.986 | Warren | 9440 |
| Washington | 205.553 | Washington | 14.690 |
| Wayne | 51.708 | Honesdale | 4733 |
| Westmoreland | 362.326 | Greensburg | 15.330 |
| Wyoming | 27.835 | Tunkhannock | 1785 |
| York | 421.049 | York | 40.226 |
* ↑ U.S. Census Bureau: Annual Estimates of the Population for Counties: April 1, 2000 to July 1, 2007
* ↑ U.S. Census Bureau: Population Estimates for All Places: 2000 to 2007
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