| Rank | City | 2005 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,514,658 | 0.0% |
| 2 | Pittsburgh | 320,394 | -1.0% |
| 3 | Allentown | 106,245 | -0.1% |
| 4 | Erie | 102,757 | -0.2% |
| 5 | Reading | 80,435 | -0.3% |
| 6 | Scranton | 73,439 | -0.8% |
| 7 | Bethlehem | 72,537 | 0.4% |
| 8 | Lancaster | 55,415 | -0.6% |
| 9 | Harrisburg | 47,528 | -0.7% |
| 10 | Altoona | 47,436 | -1.0% |
| 11 | Wilkes-Barre | 41,421 | -0.9% |
| 12 | York | 40,251 | -0.6% |
| 13 | State College | 39,127 | 0.5% |
| 14 | Chester | 36,901 | 0.0% |
| 15 | Bethel Park | 32,526 | -0.7% |
| 16 | Norristown | 30,811 | -0.4% |
| 17 | Williamsport | 30,133 | -0.4% |
| 18 | Monroeville | 28,365 | -0.8% |
| 19 | Plum | 26,591 | -0.3% |
| 20 | Easton | 26,218 | -0.0% |
| 21 | New Castle | 25,102 | -1.1% |
| 22 | Lebanon | 23,749 | -0.7% |
| 23 | McKeesport | 22,911 | -1.1% |
| 24 | Johnstown | 22,590 | -1.3% |
| 25 | Hazleton | 22,187 | -1.2% |
| 26 | Pottstown | 21,609 | -0.3% |
| 27 | West Mifflin | 21,249 | -1.0% |
| 28 | Murrysville | 19,133 | 0.4% |
| 29 | Baldwin | 18,952 | -1.1% |
| 30 | Carlisle | 18,223 | 0.1% |
| 31 | West Chester | 18,038 | 0.2% |
| 32 | Chambersburg | 17,874 | 0.1% |
| 33 | Wilkinsburg | 17,798 | -1.2% |
| 34 | Hermitage | 16,353 | 0.2% |
| 35 | Lansdale | 15,954 | -0.2% |
| 36 | Sharon | 15,498 | -1.2% |
| 37 | Greensburg | 15,498 | -0.6% |
| 38 | Washington | 15,095 | -0.1% |
| 39 | Phoenixville | 14,902 | 0.2% |
| 40 | Hanover | 14,832 | 0.4% |
| 41 | Indiana | 14,804 | -0.3% |
| 42 | Pottsville | 14,753 | -1.2% |
| 43 | Butler | 14,510 | -1.0% |
| 44 | New Kensington | 14,092 | -1.0% |
| 45 | Dunmore | 14,020 | -0.5% |
| 46 | St. Marys | 13,925 | -1.0% |
| 47 | Whitehall | 13,891 | -0.9% |
| 48 | Meadville | 13,404 | -0.5% |
| 49 | Kingston | 13,196 | -1.1% |
| 50 | Ephrata | 13,097 | -0.2% |
| 51 | Bloomsburg | 12,712 | 0.7% |
| 52 | Lower Burrell | 12,391 | -0.4% |
| 53 | Uniontown | 11,942 | -1.0% |
| 54 | Elizabethtown | 11,912 | 0.1% |
| 55 | Franklin Park | 11,704 | 0.6% |
| 56 | Munhall | 11,560 | -1.2% |
| 57 | Yeadon | 11,462 | -0.6% |
| 58 | Coatesville | 11,329 | 1.0% |
| 59 | Emmaus | 11,269 | -0.1% |
| 60 | Aliquippa | 11,105 | -1.2% |
| 61 | Oil City | 10,948 | -1.2% |
| 62 | Lansdowne | 10,763 | -0.6% |
| 63 | Berwick | 10,409 | -0.8% |
| 64 | Nanticoke | 10,405 | -1.2% |
| 65 | East Stroudsburg | 10,401 | 1.2% |
| 66 | Wyomissing | 10,338 | -0.2% |
| 67 | Jeannette | 10,203 | -1.0% |
| 68 | Columbia | 10,137 | -0.5% |
| 69 | Sunbury | 10,082 | -1.2% |
| 70 | Darby | 10,026 | -0.6% |
| 71 | Brentwood | 9,932 | -1.2% |
| 72 | Bristol | 9,817 | -0.3% |
| 73 | Morrisville | 9,804 | -0.6% |
| 74 | Jefferson Hills | 9,688 | -0.0% |
| 75 | Warren | 9,670 | -1.4% |
| 76 | Waynesboro | 9,636 | 0.1% |
| 77 | Northampton | 9,625 | 0.6% |
| 78 | Beaver Falls | 9,447 | -1.1% |
| 79 | Carbondale | 9,395 | -1.0% |
| 80 | Economy | 9,264 | -0.2% |
| 81 | Swissvale | 9,162 | -1.2% |
| 82 | Lititz | 8,986 | -0.1% |
| 83 | Middletown | 8,864 | -0.7% |
| 84 | Dormont | 8,854 | -1.3% |
| 85 | Mechanicsburg | 8,822 | -0.6% |
| 86 | Quakertown | 8,813 | -0.3% |
| 87 | Lock Haven | 8,776 | -1.0% |
| 88 | Canonsburg | 8,733 | 0.4% |
| 89 | Perkasie | 8,716 | -0.4% |
| 90 | Bradford | 8,660 | -1.3% |
| 91 | Connellsville | 8,642 | -1.2% |
| 92 | Lewistown | 8,641 | -1.0% |
| 93 | Latrobe | 8,625 | -1.0% |
| 94 | Old Forge | 8,547 | -0.7% |
| 95 | Collingdale | 8,470 | -0.5% |
| 96 | Castle Shannon | 8,432 | -0.5% |
| 97 | White Oak | 8,377 | -0.5% |
| 98 | Bellevue | 8,368 | -1.2% |
| 99 | Monessen | 8,308 | -1.0% |
| 100 | Ellwood City | 8,288 | -1.2% |
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