| City | 2025 Pop. ↓ |
|---|---|
| Allentown | 127,489 |
| Abington | 59,492 |
| Altoona | 42,429 |
| Aston | 16,944 |
| Antrim | 16,473 |
| Adams | 15,786 |
| Amity | 13,667 |
| Aliquippa | 8,948 |
| Allegheny | 8,176 |
| Archbald | 7,559 |
| Ambler | 6,922 |
| Ambridge | 6,869 |
| Allegheny | 6,587 |
| Antis | 6,353 |
| Allen | 5,716 |
| Adams | 5,592 |
| Athens | 5,103 |
| Annville | 5,045 |
| Arnold | 4,630 |
| Avalon | 4,550 |
| Aldan | 4,282 |
| Akron | 4,116 |
| Armagh | 4,060 |
| Alsace | 3,949 |
| Amwell | 3,653 |
| Athens | 3,216 |
| Allegheny | 2,800 |
| Aspinwall | 2,776 |
| Armstrong | 2,763 |
| Ashley | 2,642 |
| Alburtis | 2,633 |
| Avoca | 2,566 |
| Ashland | 2,502 |
| Ayr | 1,988 |
| Adamstown | 1,966 |
| Aleppo | 1,774 |
| Auburn | 1,731 |
| Albany | 1,719 |
| Apollo | 1,537 |
| Anthony | 1,496 |
| Albion | 1,489 |
| Avis | 1,466 |
| Atglen | 1,322 |
| Avondale | 1,275 |
| Ashland | 1,086 |
| Abbottstown | 1,053 |
| Asylum | 1,000 |
| Amity | 979 |
| Addison | 906 |
| Arendtsville | 897 |
| Adams | 885 |
| Avonmore | 878 |
| Albany | 865 |
| Anthony | 853 |
| Annin | 720 |
| Auburn | 678 |
| Armstrong | 669 |
| Athens | 637 |
| Allegheny | 607 |
| Allegheny | 605 |
| Ararat | 513 |
| Allenport | 471 |
| Austin | 463 |
| Apolacon | 420 |
| Aleppo | 396 |
| Allegany | 391 |
| Alexandria | 367 |
| Applewold | 321 |
| Allegheny | 280 |
| Arona | 245 |
| Allison | 229 |
| Abbott | 223 |
| Addison | 215 |
| Ashville | 207 |
| Armenia | 201 |
| Adamsburg | 142 |
| Alba | 135 |
| Atwood | 105 |
| Armagh | 100 |
| City | 2025 Pop. ↓ |
|---|---|
| Indiana | 14,362 |
| Indiana | 7,438 |
| Irwin | 3,777 |
| Ingram | 3,224 |
| Independence | 2,203 |
| Industry | 1,774 |
| Independence | 1,487 |
| Irwin | 1,230 |
| Ivyland | 950 |
| Irvona | 527 |
| Indian Lake | 390 |
| City | 2025 Pop. ↓ |
|---|---|
| Johnstown | 17,724 |
| Jefferson Hills | 12,257 |
| Jackson | 9,320 |
| Jackson | 9,320 |
| Jeannette | 8,516 |
| Jackson | 6,460 |
| Jackson | 6,403 |
| Jefferson | 5,041 |
| Jenkintown | 4,745 |
| Jackson | 4,615 |
| Jim Thorpe | 4,553 |
| Jenkins | 4,535 |
| Jessup | 4,501 |
| Jackson | 4,098 |
| Jersey Shore | 4,086 |
| Jefferson | 3,916 |
| Jenks | 3,802 |
| Jenner | 3,553 |
| Jefferson | 2,439 |
| Johnsonburg | 2,298 |
| Jefferson | 2,189 |
| Jermyn | 2,135 |
| Jefferson | 1,925 |
| Jay | 1,883 |
| Jackson | 1,860 |
| Jackson | 1,857 |
| Jefferson | 1,844 |
| Jacobus | 1,841 |
| Jonestown | 1,659 |
| Jackson | 1,606 |
| Juniata | 1,584 |
| Jones | 1,536 |
| Jefferson | 1,393 |
| Jackson | 1,185 |
| Jefferson | 1,118 |
| Jackson | 945 |
| Juniata | 937 |
| Juniata | 917 |
| Jackson | 915 |
| Jackson | 893 |
| Jordan | 840 |
| Jackson | 832 |
| Jordan | 763 |
| Jennerstown | 660 |
| Jefferson | 655 |
| Jackson | 630 |
| Jackson | 609 |
| Jamestown | 561 |
| Juniata Terrace | 550 |
| Jordan | 483 |
| Jessup | 476 |
| Juniata | 432 |
| Jackson | 391 |
| Jackson | 363 |
| Jefferson | 361 |
| Jefferson | 234 |
| Jackson Center | 184 |
| Jeddo | 109 |
| City | 2025 Pop. ↓ |
|---|---|
| Kingston | 13,511 |
| Kennett | 9,357 |
| Kennedy | 8,406 |
| Kingston | 7,259 |
| Kennett Square | 6,907 |
| Kiskiminetas | 4,466 |
| Kutztown | 4,228 |
| Kelly | 4,038 |
| Kittanning | 3,920 |
| Kane | 3,453 |
| Kenhorst | 3,043 |
| Kulpmont | 2,683 |
| Keating | 2,653 |
| Kittanning | 1,982 |
| Kidder | 1,863 |
| Kimmel | 1,529 |
| Kline | 1,490 |
| King | 1,177 |
| Knox | 1,068 |
| Knox | 982 |
| Knox | 976 |
| Kilbuck | 742 |
| Karthaus | 726 |
| Koppel | 690 |
| Knoxville | 664 |
| Knox | 577 |
| Kistler | 282 |
| Keating | 280 |
| Kingsley | 248 |
| Karns City | 164 |
| City | 2025 Pop. ↓ |
|---|---|
| Oil City | 9,313 |
| O'Hara | 8,963 |
| Old Forge | 8,697 |
| Ohio | 7,374 |
| Oakmont | 6,593 |
| Oxford | 6,125 |
| Oxford | 5,953 |
| Olyphant | 5,403 |
| Old Lycoming | 4,940 |
| Oley | 3,929 |
| Ohioville | 3,300 |
| Ontelaunee | 3,144 |
| Orwigsburg | 3,019 |
| Oakland | 2,687 |
| Oliver | 2,104 |
| Oliver | 2,034 |
| Oil Creek | 1,658 |
| Otto | 1,462 |
| Overfield | 1,423 |
| Oakdale | 1,414 |
| Oakland | 1,336 |
| Orwell | 1,215 |
| Orange | 1,179 |
| Osceola Mills | 1,005 |
| Oneida | 987 |
| Oliver | 976 |
| Oregon | 837 |
| Oklahoma | 764 |
| Oil Creek | 729 |
| Osceola | 578 |
| Oakland | 547 |
| Otter Creek | 508 |
| Oakland | 498 |
| Orangeville | 476 |
| Ogle | 469 |
| Orbisonia | 433 |
| Overton | 239 |
| Oswayo | 221 |
| Orrstown | 212 |
| Oswayo | 129 |
| Ohiopyle | 35 |
| City | 2025 Pop. ↓ |
|---|---|
| Quakertown | 9,285 |
| Quincy | 5,301 |
| Quarryville | 2,874 |
| Quemahoning | 1,780 |
| City | 2025 Pop. ↓ |
|---|---|
| Tredyffrin | 32,198 |
| Towamencin | 18,180 |
| Tobyhanna | 8,347 |
| Thornbury | 7,036 |
| Tamaqua | 6,953 |
| Tunkhannock | 6,916 |
| Taylor | 6,246 |
| Tyrone | 5,275 |
| Titusville | 5,130 |
| Telford | 4,989 |
| Turtle Creek | 4,878 |
| Towamensing | 4,617 |
| Tarentum | 4,143 |
| Throop | 4,140 |
| Trappe | 4,097 |
| Tinicum | 4,038 |
| Tunkhannock | 3,912 |
| Tinicum | 3,857 |
| Tilden | 3,745 |
| Tulpehocken | 3,704 |
| Trafford | 3,217 |
| Thornbury | 3,206 |
| Towanda | 2,768 |
| Tyrone | 2,343 |
| Texas | 2,271 |
| Tullytown | 2,253 |
| Taylor | 2,251 |
| Topton | 2,068 |
| Trainer | 1,985 |
| Tyrone | 1,984 |
| Tyrone | 1,827 |
| Turbot | 1,799 |
| Tunkhannock | 1,718 |
| Tremont | 1,692 |
| Todd | 1,602 |
| Troy | 1,569 |
| Tatamy | 1,441 |
| Tower City | 1,439 |
| Tuscarora | 1,357 |
| Terre Hill | 1,287 |
| Troy | 1,242 |
| Tuscarora | 1,129 |
| Tuscarora | 1,061 |
| Taylor | 1,055 |
| Troy | 1,044 |
| Thompson | 1,031 |
| Towanda | 1,030 |
| Thornhurst | 1,017 |
| Turbett | 967 |
| Taylor | 962 |
| Toby | 959 |
| Tioga | 920 |
| Terry | 901 |
| Todd | 889 |
| Trumbauersville | 877 |
| Taylor | 855 |
| Turbotville | 659 |
| Thompsontown | 637 |
| Tionesta | 627 |
| Tidioute | 603 |
| Tioga | 599 |
| Tell | 553 |
| Toboyne | 482 |
| Thornburg | 445 |
| Three Springs | 429 |
| Thompson | 428 |
| Tionesta | 399 |
| Townville | 320 |
| Tunnelhill | 306 |
| Tremont | 285 |
| Triumph | 262 |
| Thompson | 248 |
| Troutville | 225 |
| Twilight | 220 |
| Timblin | 142 |
| City | 2025 Pop. ↓ |
|---|---|
| Valley | 8,105 |
| Vernon | 5,247 |
| Vandergrift | 4,926 |
| Verona | 2,380 |
| Venango | 2,211 |
| Valley | 2,149 |
| Versailles | 1,410 |
| Vanport | 1,257 |
| Venango | 933 |
| Venango | 829 |
| Vandling | 722 |
| Valencia | 720 |
| Valley | 627 |
| Vintondale | 400 |
| Vanderbilt | 393 |
| Victory | 377 |
| Venango | 207 |
| Volant | 120 |
| Valley-Hi | 9 |
| City | 2025 Pop. ↓ |
|---|---|
| York | 45,355 |
| York | 31,850 |
| Yeadon | 12,497 |
| Youngwood | 2,890 |
| Yardley | 2,588 |
| Young | 1,683 |
| Young | 1,655 |
| Youngsville | 1,647 |
| Yoe | 1,064 |
| York Springs | 708 |
| York Haven | 696 |
| Yatesville | 649 |
| Youngstown | 242 |
| Yorkana | 238 |
| City | 2025 Pop. ↓ |
|---|---|
| Zelienople | 3,735 |
| Zerbe | 1,770 |