| Rank | City | 2009 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,540,351 | 0.2% |
| 2 | Pittsburgh | 312,119 | -0.8% |
| 3 | Allentown | 107,693 | 0.1% |
| 4 | Erie | 103,815 | 0.0% |
| 5 | Reading | 80,883 | -0.1% |
| 6 | Bethlehem | 72,690 | 0.2% |
| 7 | Scranton | 72,258 | -0.6% |
| 8 | Lancaster | 55,356 | -0.3% |
| 9 | Harrisburg | 47,464 | -0.4% |
| 10 | Altoona | 46,356 | -0.8% |
| 11 | Wilkes-Barre | 40,965 | -0.6% |
| 12 | York | 40,251 | -0.3% |
| 13 | State College | 39,926 | 0.5% |
| 14 | Chester | 36,837 | -0.0% |
| 15 | Norristown | 31,944 | 0.2% |
| 16 | Bethel Park | 31,557 | -0.7% |
| 17 | Williamsport | 29,301 | -0.6% |
| 18 | Monroeville | 27,635 | -0.7% |
| 19 | Easton | 26,315 | 0.0% |
| 20 | Plum | 26,216 | -0.3% |
| 21 | New Castle | 24,227 | -1.0% |
| 22 | Lebanon | 24,173 | -0.1% |
| 23 | McKeesport | 22,096 | -1.0% |
| 24 | Hazleton | 21,749 | -0.8% |
| 25 | Johnstown | 21,658 | -1.2% |
| 26 | Pottstown | 21,370 | -0.3% |
| 27 | West Mifflin | 20,472 | -1.0% |
| 28 | Murrysville | 19,499 | 0.4% |
| 29 | Baldwin | 18,458 | -0.9% |
| 30 | Carlisle | 18,452 | 0.2% |
| 31 | West Chester | 18,389 | 0.4% |
| 32 | Chambersburg | 18,277 | 0.3% |
| 33 | Wilkinsburg | 17,124 | -1.1% |
| 34 | Phoenixville | 16,440 | 1.3% |
| 35 | Hermitage | 16,272 | 0.1% |
| 36 | Lansdale | 15,569 | -0.4% |
| 37 | Greensburg | 15,320 | -0.4% |
| 38 | Hanover | 15,064 | 0.4% |
| 39 | Indiana | 15,018 | 0.0% |
| 40 | Sharon | 14,862 | -1.1% |
| 41 | Washington | 14,752 | -0.3% |
| 42 | Pottsville | 14,418 | -0.9% |
| 43 | Butler | 13,985 | -1.0% |
| 44 | Dunmore | 13,971 | -0.3% |
| 45 | New Kensington | 13,687 | -0.9% |
| 46 | Whitehall | 13,423 | -0.9% |
| 47 | St. Marys | 13,387 | -1.0% |
| 48 | Meadville | 13,232 | -0.4% |
| 49 | Ephrata | 13,083 | -0.1% |
| 50 | Kingston | 12,935 | -0.8% |
| 51 | Bloomsburg | 12,786 | 0.4% |
| 52 | Franklin Park | 12,197 | 0.8% |
| 53 | Lower Burrell | 12,110 | -0.5% |
| 54 | Elizabethtown | 12,058 | 0.2% |
| 55 | Coatesville | 11,684 | 0.9% |
| 56 | Uniontown | 11,592 | -0.9% |
| 57 | Yeadon | 11,425 | -0.3% |
| 58 | Emmaus | 11,392 | 0.1% |
| 59 | Munhall | 11,123 | -1.1% |
| 60 | Lansdowne | 10,706 | -0.4% |
| 61 | Aliquippa | 10,621 | -1.1% |
| 62 | Oil City | 10,587 | -1.0% |
| 63 | Wyomissing | 10,421 | -0.0% |
| 64 | East Stroudsburg | 10,404 | 0.6% |
| 65 | Berwick | 10,209 | -0.6% |
| 66 | Nanticoke | 10,203 | -0.8% |
| 67 | Columbia | 10,073 | -0.3% |
| 68 | Darby | 9,957 | -0.4% |
| 69 | Waynesboro | 9,956 | 0.4% |
| 70 | Northampton | 9,918 | 0.7% |
| 71 | Jeannette | 9,885 | -0.9% |
| 72 | Sunbury | 9,832 | -0.9% |
| 73 | Jefferson Hills | 9,706 | 0.0% |
| 74 | Bristol | 9,687 | -0.3% |
| 75 | Morrisville | 9,633 | -0.5% |
| 76 | Brentwood | 9,538 | -1.1% |
| 77 | Warren | 9,383 | -1.1% |
| 78 | Carbondale | 9,211 | -0.7% |
| 79 | Economy | 9,118 | -0.3% |
| 80 | Lititz | 9,056 | 0.0% |
| 81 | Beaver Falls | 9,025 | -1.1% |
| 82 | Middletown | 8,791 | -0.4% |
| 83 | Swissvale | 8,783 | -1.1% |
| 84 | Mechanicsburg | 8,748 | -0.4% |
| 85 | Canonsburg | 8,714 | 0.2% |
| 86 | Quakertown | 8,680 | -0.4% |
| 87 | Perkasie | 8,666 | -0.3% |
| 88 | Lock Haven | 8,552 | -0.8% |
| 89 | Old Forge | 8,516 | -0.4% |
| 90 | Lewistown | 8,497 | -0.7% |
| 91 | Dormont | 8,477 | -1.2% |
| 92 | Conshohocken | 8,422 | 1.3% |
| 93 | Collingdale | 8,411 | -0.4% |
| 94 | Connellsville | 8,400 | -0.9% |
| 95 | Latrobe | 8,372 | -0.9% |
| 96 | Bradford | 8,348 | -1.1% |
| 97 | Doylestown | 8,140 | -0.1% |
| 98 | White Oak | 8,131 | -0.6% |
| 99 | Castle Shannon | 8,100 | -0.8% |
| 100 | Gettysburg | 8,070 | 0.9% |
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