| Rank | City | 2008 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,530,031 | 0.2% |
| 2 | Pittsburgh | 312,322 | -0.9% |
| 3 | Allentown | 107,267 | 0.1% |
| 4 | Erie | 103,736 | 0.0% |
| 5 | Reading | 81,010 | -0.1% |
| 6 | Bethlehem | 72,636 | 0.3% |
| 7 | Scranton | 72,490 | -0.6% |
| 8 | Lancaster | 55,253 | -0.4% |
| 9 | Harrisburg | 47,416 | -0.4% |
| 10 | Altoona | 46,596 | -0.8% |
| 11 | Wilkes-Barre | 41,099 | -0.6% |
| 12 | York | 40,308 | -0.3% |
| 13 | State College | 39,348 | 0.4% |
| 14 | Chester | 36,735 | -0.1% |
| 15 | Bethel Park | 31,645 | -0.8% |
| 16 | Norristown | 31,122 | -0.1% |
| 17 | Williamsport | 29,532 | -0.5% |
| 18 | Monroeville | 27,664 | -0.8% |
| 19 | Easton | 26,289 | 0.0% |
| 20 | Plum | 26,190 | -0.4% |
| 21 | New Castle | 24,391 | -1.1% |
| 22 | Lebanon | 24,167 | -0.2% |
| 23 | McKeesport | 22,216 | -1.0% |
| 24 | Hazleton | 21,847 | -0.9% |
| 25 | Johnstown | 21,797 | -1.3% |
| 26 | Pottstown | 21,375 | -0.3% |
| 27 | West Mifflin | 20,584 | -1.0% |
| 28 | Murrysville | 19,421 | 0.4% |
| 29 | Carlisle | 18,436 | 0.2% |
| 30 | Baldwin | 18,431 | -1.0% |
| 31 | West Chester | 18,383 | 0.4% |
| 32 | Chambersburg | 17,955 | 0.1% |
| 33 | Wilkinsburg | 17,223 | -1.1% |
| 34 | Hermitage | 16,276 | 0.1% |
| 35 | Phoenixville | 16,120 | 1.2% |
| 36 | Lansdale | 15,607 | -0.4% |
| 37 | Greensburg | 15,350 | -0.5% |
| 38 | Sharon | 14,970 | -1.2% |
| 39 | Hanover | 14,963 | 0.4% |
| 40 | Washington | 14,770 | -0.4% |
| 41 | Indiana | 14,743 | -0.2% |
| 42 | Pottsville | 14,471 | -1.0% |
| 43 | Butler | 14,066 | -1.0% |
| 44 | Dunmore | 14,037 | -0.3% |
| 45 | New Kensington | 13,693 | -1.0% |
| 46 | St. Marys | 13,525 | -1.0% |
| 47 | Whitehall | 13,483 | -1.0% |
| 48 | Meadville | 13,289 | -0.4% |
| 49 | Ephrata | 13,067 | -0.1% |
| 50 | Kingston | 12,987 | -0.9% |
| 51 | Bloomsburg | 12,730 | 0.4% |
| 52 | Lower Burrell | 12,159 | -0.5% |
| 53 | Elizabethtown | 12,046 | 0.2% |
| 54 | Franklin Park | 12,036 | 0.7% |
| 55 | Uniontown | 11,655 | -0.9% |
| 56 | Coatesville | 11,645 | 1.0% |
| 57 | Yeadon | 11,424 | -0.4% |
| 58 | Emmaus | 11,359 | 0.1% |
| 59 | Munhall | 11,184 | -1.1% |
| 60 | Lansdowne | 10,713 | -0.4% |
| 61 | Aliquippa | 10,694 | -1.2% |
| 62 | Oil City | 10,661 | -1.1% |
| 63 | Wyomissing | 10,432 | 0.0% |
| 64 | East Stroudsburg | 10,432 | 0.7% |
| 65 | Nanticoke | 10,232 | -0.9% |
| 66 | Berwick | 10,220 | -0.7% |
| 67 | Columbia | 10,073 | -0.4% |
| 68 | Darby | 9,961 | -0.5% |
| 69 | Jeannette | 9,939 | -1.0% |
| 70 | Waynesboro | 9,887 | 0.4% |
| 71 | Northampton | 9,885 | 0.7% |
| 72 | Sunbury | 9,846 | -1.0% |
| 73 | Bristol | 9,691 | -0.4% |
| 74 | Jefferson Hills | 9,678 | -0.0% |
| 75 | Morrisville | 9,655 | -0.5% |
| 76 | Brentwood | 9,595 | -1.2% |
| 77 | Warren | 9,420 | -1.2% |
| 78 | Carbondale | 9,261 | -0.8% |
| 79 | Beaver Falls | 9,111 | -1.2% |
| 80 | Economy | 9,106 | -0.4% |
| 81 | Lititz | 9,053 | 0.0% |
| 82 | Swissvale | 8,836 | -1.2% |
| 83 | Mechanicsburg | 8,788 | -0.4% |
| 84 | Middletown | 8,785 | -0.5% |
| 85 | Canonsburg | 8,707 | 0.2% |
| 86 | Quakertown | 8,699 | -0.4% |
| 87 | Perkasie | 8,656 | -0.3% |
| 88 | Lock Haven | 8,567 | -0.9% |
| 89 | Lewistown | 8,531 | -0.7% |
| 90 | Dormont | 8,529 | -1.2% |
| 91 | Old Forge | 8,517 | -0.4% |
| 92 | Connellsville | 8,451 | -1.0% |
| 93 | Conshohocken | 8,431 | 1.5% |
| 94 | Latrobe | 8,420 | -0.9% |
| 95 | Collingdale | 8,417 | -0.4% |
| 96 | Bradford | 8,391 | -1.2% |
| 97 | White Oak | 8,164 | -0.6% |
| 98 | Doylestown | 8,155 | -0.1% |
| 99 | Castle Shannon | 8,146 | -0.8% |
| 100 | Monessen | 8,074 | -1.0% |
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