| Rank | City | 2003 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,510,550 | -0.1% |
| 2 | Pittsburgh | 327,429 | -0.9% |
| 3 | Allentown | 105,871 | -0.3% |
| 4 | Erie | 103,979 | 0.2% |
| 5 | Reading | 80,594 | -0.4% |
| 6 | Scranton | 74,450 | -0.9% |
| 7 | Bethlehem | 71,857 | 0.4% |
| 8 | Lancaster | 56,096 | -0.6% |
| 9 | Harrisburg | 48,374 | -0.5% |
| 10 | Altoona | 48,328 | -1.1% |
| 11 | Wilkes-Barre | 41,985 | -1.2% |
| 12 | York | 40,733 | -0.6% |
| 13 | State College | 39,547 | 1.5% |
| 14 | Chester | 37,175 | 0.4% |
| 15 | Bethel Park | 32,959 | -0.8% |
| 16 | Norristown | 31,115 | -0.3% |
| 17 | Williamsport | 30,071 | -0.9% |
| 18 | Monroeville | 28,786 | -0.8% |
| 19 | Plum | 26,874 | -0.1% |
| 20 | Easton | 26,177 | -0.1% |
| 21 | New Castle | 25,637 | -1.2% |
| 22 | Lebanon | 24,046 | -0.8% |
| 23 | McKeesport | 23,483 | -0.9% |
| 24 | Johnstown | 23,164 | -1.4% |
| 25 | Hazleton | 22,674 | -1.3% |
| 26 | Pottstown | 21,793 | -0.2% |
| 27 | West Mifflin | 21,743 | -0.9% |
| 28 | Baldwin | 19,416 | -1.0% |
| 29 | Murrysville | 18,899 | 0.2% |
| 30 | Wilkinsburg | 18,261 | -1.1% |
| 31 | Carlisle | 18,261 | 0.3% |
| 32 | Chambersburg | 17,777 | -0.2% |
| 33 | West Chester | 17,734 | -0.4% |
| 34 | Hermitage | 16,315 | 0.3% |
| 35 | Lansdale | 16,085 | 0.0% |
| 36 | Sharon | 15,855 | -1.3% |
| 37 | Greensburg | 15,606 | -0.8% |
| 38 | Pottsville | 15,135 | -1.2% |
| 39 | Indiana | 15,007 | 0.0% |
| 40 | Washington | 14,883 | -1.0% |
| 41 | Butler | 14,830 | -0.9% |
| 42 | Phoenixville | 14,739 | -0.2% |
| 43 | Hanover | 14,715 | 0.5% |
| 44 | New Kensington | 14,335 | -1.1% |
| 45 | St. Marys | 14,185 | -1.0% |
| 46 | Whitehall | 14,174 | -0.9% |
| 47 | Dunmore | 14,137 | -0.6% |
| 48 | Meadville | 13,491 | -0.6% |
| 49 | Kingston | 13,465 | -1.3% |
| 50 | Ephrata | 13,080 | -0.4% |
| 51 | Bloomsburg | 12,629 | 1.1% |
| 52 | Lower Burrell | 12,492 | -0.4% |
| 53 | Uniontown | 12,203 | -0.9% |
| 54 | Elizabethtown | 11,891 | 0.1% |
| 55 | Munhall | 11,858 | -1.1% |
| 56 | Yeadon | 11,601 | -0.6% |
| 57 | Franklin Park | 11,531 | 0.5% |
| 58 | Aliquippa | 11,346 | -1.3% |
| 59 | Oil City | 11,234 | -1.1% |
| 60 | Emmaus | 11,224 | -0.4% |
| 61 | Coatesville | 11,080 | 1.0% |
| 62 | Lansdowne | 10,893 | -0.6% |
| 63 | Nanticoke | 10,633 | -1.3% |
| 64 | Berwick | 10,542 | -0.9% |
| 65 | Jeannette | 10,410 | -1.0% |
| 66 | Wyomissing | 10,353 | -0.3% |
| 67 | Sunbury | 10,315 | -1.3% |
| 68 | Columbia | 10,250 | -0.4% |
| 69 | Brentwood | 10,198 | -1.1% |
| 70 | East Stroudsburg | 10,180 | 1.4% |
| 71 | Darby | 10,152 | -0.7% |
| 72 | Bristol | 9,985 | 0.2% |
| 73 | Morrisville | 9,958 | -0.3% |
| 74 | Warren | 9,941 | -1.4% |
| 75 | Jefferson Hills | 9,665 | -0.2% |
| 76 | Beaver Falls | 9,647 | -1.2% |
| 77 | Waynesboro | 9,594 | -0.1% |
| 78 | Carbondale | 9,567 | -1.1% |
| 79 | Northampton | 9,486 | 0.5% |
| 80 | Swissvale | 9,405 | -1.1% |
| 81 | Economy | 9,268 | -0.5% |
| 82 | Dormont | 9,095 | -1.2% |
| 83 | Lock Haven | 9,034 | -0.6% |
| 84 | Middletown | 9,026 | -0.4% |
| 85 | Lititz | 8,978 | -0.3% |
| 86 | Mechanicsburg | 8,933 | -0.5% |
| 87 | Bradford | 8,910 | -1.2% |
| 88 | Quakertown | 8,857 | -0.4% |
| 89 | Lewistown | 8,851 | -0.7% |
| 90 | Perkasie | 8,835 | -0.0% |
| 91 | Connellsville | 8,815 | -1.4% |
| 92 | Latrobe | 8,786 | -1.0% |
| 93 | Canonsburg | 8,640 | 0.2% |
| 94 | Old Forge | 8,629 | -0.8% |
| 95 | Bellevue | 8,588 | -1.0% |
| 96 | White Oak | 8,549 | 0.0% |
| 97 | Collingdale | 8,540 | -0.7% |
| 98 | Ellwood City | 8,480 | -1.2% |
| 99 | Monessen | 8,471 | -1.0% |
| 100 | Pleasant Hills | 8,459 | -1.0% |
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