| Rank | City | 2013 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Philadelphia | 1,547,607 | 0.7% |
| 2 | Pittsburgh | 306,211 | 0.1% |
| 3 | Allentown | 118,974 | 0.4% |
| 4 | Erie | 101,047 | -0.4% |
| 5 | Reading | 88,102 | 0.0% |
| 6 | Scranton | 75,809 | -0.2% |
| 7 | Bethlehem | 75,103 | 0.1% |
| 8 | Lancaster | 59,360 | 0.0% |
| 9 | Harrisburg | 49,279 | -0.3% |
| 10 | Altoona | 46,148 | -0.2% |
| 11 | York | 43,550 | -0.2% |
| 12 | State College | 41,983 | -0.1% |
| 13 | Wilkes-Barre | 41,243 | -0.3% |
| 14 | Norristown | 34,427 | 0.1% |
| 15 | Chester | 34,031 | 0.1% |
| 16 | Bethel Park | 32,374 | 0.1% |
| 17 | Williamsport | 29,497 | 0.2% |
| 18 | Monroeville | 28,386 | – |
| 19 | Plum | 27,395 | 0.5% |
| 20 | Easton | 26,951 | 0.3% |
| 21 | Lebanon | 25,554 | 0.2% |
| 22 | Hazleton | 25,224 | -0.2% |
| 23 | New Castle | 22,851 | -0.9% |
| 24 | Pottstown | 22,480 | 0.2% |
| 25 | Johnstown | 20,577 | -1.0% |
| 26 | Chambersburg | 20,360 | 0.2% |
| 27 | West Mifflin | 20,284 | -0.1% |
| 28 | Murrysville | 20,219 | 0.3% |
| 29 | Baldwin | 19,801 | 0.1% |
| 30 | McKeesport | 19,686 | -0.1% |
| 31 | Carlisle | 18,880 | 0.5% |
| 32 | West Chester | 18,857 | 1.1% |
| 33 | Phoenixville | 16,518 | 0.2% |
| 34 | Lansdale | 16,367 | 0.3% |
| 35 | Hermitage | 16,217 | -0.0% |
| 36 | Wilkinsburg | 15,906 | -0.1% |
| 37 | Hanover | 15,349 | 0.2% |
| 38 | Greensburg | 14,736 | -0.5% |
| 39 | Bloomsburg | 14,633 | -0.8% |
| 40 | Pottsville | 14,129 | -0.7% |
| 41 | Dunmore | 14,069 | 0.0% |
| 42 | Indiana | 13,953 | -0.1% |
| 43 | Whitehall | 13,938 | -0.0% |
| 44 | Franklin Park | 13,900 | 1.6% |
| 45 | Sharon | 13,815 | -0.8% |
| 46 | Butler | 13,620 | -0.5% |
| 47 | Washington | 13,555 | -0.4% |
| 48 | Ephrata | 13,506 | 0.4% |
| 49 | Meadville | 13,263 | -0.5% |
| 50 | Coatesville | 13,134 | 0.1% |
| 51 | Kingston | 13,131 | -0.2% |
| 52 | New Kensington | 12,962 | -0.6% |
| 53 | St. Marys | 12,913 | -0.6% |
| 54 | Lower Burrell | 11,642 | -0.5% |
| 55 | Elizabethtown | 11,560 | 0.1% |
| 56 | Yeadon | 11,496 | 0.2% |
| 57 | Munhall | 11,380 | -0.1% |
| 58 | Emmaus | 11,307 | 0.4% |
| 59 | Jefferson Hills | 10,990 | 1.7% |
| 60 | Darby | 10,682 | -0.0% |
| 61 | Waynesboro | 10,633 | 0.3% |
| 62 | Lansdowne | 10,621 | 0.0% |
| 63 | Wyomissing | 10,476 | 0.1% |
| 64 | Nanticoke | 10,419 | -0.2% |
| 65 | Columbia | 10,381 | -0.1% |
| 66 | Oil City | 10,375 | -0.9% |
| 67 | Berwick | 10,365 | -0.5% |
| 68 | Uniontown | 10,231 | -0.7% |
| 69 | Northampton | 9,935 | 0.0% |
| 70 | East Stroudsburg | 9,867 | 0.1% |
| 71 | Sunbury | 9,835 | -0.4% |
| 72 | Lock Haven | 9,797 | 0.1% |
| 73 | Bristol | 9,686 | -0.2% |
| 74 | Brentwood | 9,620 | -0.1% |
| 75 | Warren | 9,530 | -0.9% |
| 76 | Jeannette | 9,530 | -0.6% |
| 77 | Lititz | 9,385 | 0.1% |
| 78 | Aliquippa | 9,351 | -0.5% |
| 79 | Economy | 9,078 | 0.6% |
| 80 | Canonsburg | 8,983 | -0.1% |
| 81 | Mechanicsburg | 8,968 | -0.1% |
| 82 | Swissvale | 8,967 | -0.1% |
| 83 | Quakertown | 8,957 | -0.1% |
| 84 | Middletown | 8,877 | -0.1% |
| 85 | Carbondale | 8,873 | -0.1% |
| 86 | Beaver Falls | 8,785 | -1.1% |
| 87 | Collingdale | 8,783 | -0.0% |
| 88 | Morrisville | 8,700 | -0.2% |
| 89 | Bradford | 8,683 | -0.5% |
| 90 | Dormont | 8,577 | -0.1% |
| 91 | Perkasie | 8,523 | 0.1% |
| 92 | Doylestown | 8,365 | -0.1% |
| 93 | Lewistown | 8,360 | 0.1% |
| 94 | Bellevue | 8,352 | -0.1% |
| 95 | Castle Shannon | 8,304 | -0.1% |
| 96 | Pleasant Hills | 8,288 | 0.1% |
| 97 | Millersville | 8,288 | 0.7% |
| 98 | Old Forge | 8,288 | -0.2% |
| 99 | Latrobe | 8,235 | -0.6% |
| 100 | Grove City | 8,232 | -0.5% |
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