| City | 2026 Pop. ↓ |
|---|---|
| Allentown | 127,841 |
| Abington | 59,909 |
| Altoona | 42,140 |
| Aston | 17,050 |
| Antrim | 16,648 |
| Adams | 15,867 |
| Amity | 13,767 |
| Aliquippa | 8,894 |
| Allegheny | 8,159 |
| Archbald | 7,610 |
| Ambler | 6,945 |
| Ambridge | 6,853 |
| Allegheny | 6,586 |
| Antis | 6,345 |
| Allen | 5,838 |
| Adams | 5,560 |
| Athens | 5,089 |
| Annville | 5,070 |
| Arnold | 4,603 |
| Avalon | 4,507 |
| Aldan | 4,288 |
| Akron | 4,109 |
| Armagh | 4,067 |
| Alsace | 3,982 |
| Amwell | 3,651 |
| Athens | 3,206 |
| Allegheny | 2,846 |
| Armstrong | 2,766 |
| Aspinwall | 2,749 |
| Ashley | 2,653 |
| Alburtis | 2,642 |
| Avoca | 2,579 |
| Ashland | 2,509 |
| Ayr | 1,980 |
| Adamstown | 1,973 |
| Aleppo | 1,771 |
| Auburn | 1,736 |
| Albany | 1,734 |
| Apollo | 1,524 |
| Anthony | 1,506 |
| Albion | 1,483 |
| Avis | 1,465 |
| Atglen | 1,325 |
| Avondale | 1,276 |
| Ashland | 1,080 |
| Abbottstown | 1,060 |
| Asylum | 999 |
| Amity | 981 |
| Arendtsville | 903 |
| Addison | 901 |
| Adams | 878 |
| Avonmore | 874 |
| Albany | 865 |
| Anthony | 852 |
| Annin | 729 |
| Auburn | 680 |
| Armstrong | 666 |
| Athens | 637 |
| Allegheny | 608 |
| Allegheny | 603 |
| Ararat | 510 |
| Allenport | 469 |
| Austin | 460 |
| Apolacon | 418 |
| Allegany | 391 |
| Aleppo | 389 |
| Alexandria | 364 |
| Applewold | 318 |
| Allegheny | 282 |
| Arona | 244 |
| Allison | 229 |
| Addison | 225 |
| Abbott | 223 |
| Ashville | 206 |
| Armenia | 200 |
| Adamsburg | 141 |
| Alba | 136 |
| Atwood | 104 |
| Armagh | 100 |
| City | 2026 Pop. ↓ |
|---|---|
| Indiana | 14,430 |
| Indiana | 7,506 |
| Irwin | 3,757 |
| Ingram | 3,192 |
| Independence | 2,197 |
| Industry | 1,763 |
| Independence | 1,480 |
| Irwin | 1,232 |
| Ivyland | 949 |
| Irvona | 523 |
| Indian Lake | 390 |
| City | 2026 Pop. ↓ |
|---|---|
| Johnstown | 17,595 |
| Jefferson Hills | 12,223 |
| Jackson | 9,452 |
| Jackson | 9,332 |
| Jeannette | 8,467 |
| Jackson | 6,727 |
| Jackson | 6,450 |
| Jefferson | 5,018 |
| Jenkintown | 4,751 |
| Jackson | 4,648 |
| Jenkins | 4,576 |
| Jim Thorpe | 4,563 |
| Jessup | 4,499 |
| Jersey Shore | 4,072 |
| Jackson | 4,071 |
| Jenks | 3,981 |
| Jefferson | 3,942 |
| Jenner | 3,527 |
| Jefferson | 2,455 |
| Johnsonburg | 2,278 |
| Jefferson | 2,158 |
| Jermyn | 2,135 |
| Jefferson | 1,913 |
| Jay | 1,873 |
| Jackson | 1,869 |
| Jackson | 1,853 |
| Jacobus | 1,844 |
| Jefferson | 1,832 |
| Jonestown | 1,665 |
| Jackson | 1,607 |
| Juniata | 1,601 |
| Jones | 1,536 |
| Jefferson | 1,386 |
| Jackson | 1,186 |
| Jefferson | 1,118 |
| Jackson | 954 |
| Juniata | 933 |
| Juniata | 923 |
| Jackson | 908 |
| Jackson | 894 |
| Jordan | 839 |
| Jackson | 827 |
| Jordan | 760 |
| Jennerstown | 657 |
| Jefferson | 656 |
| Jackson | 631 |
| Jackson | 615 |
| Jamestown | 558 |
| Juniata Terrace | 547 |
| Jordan | 490 |
| Jessup | 478 |
| Juniata | 434 |
| Jackson | 391 |
| Jefferson | 362 |
| Jackson | 358 |
| Jefferson | 231 |
| Jackson Center | 183 |
| Jeddo | 109 |
| City | 2026 Pop. ↓ |
|---|---|
| Kingston | 13,546 |
| Kennett | 9,429 |
| Kennedy | 8,373 |
| Kingston | 7,307 |
| Kennett Square | 7,101 |
| Kiskiminetas | 4,435 |
| Kelly | 4,253 |
| Kutztown | 4,243 |
| Kittanning | 3,920 |
| Kane | 3,418 |
| Kenhorst | 3,052 |
| Kulpmont | 2,669 |
| Keating | 2,649 |
| Kittanning | 1,979 |
| Kidder | 1,876 |
| Kimmel | 1,534 |
| Kline | 1,496 |
| King | 1,179 |
| Knox | 1,062 |
| Knox | 985 |
| Knox | 969 |
| Kilbuck | 738 |
| Karthaus | 711 |
| Koppel | 687 |
| Knoxville | 661 |
| Knox | 574 |
| Kistler | 280 |
| Keating | 278 |
| Kingsley | 243 |
| Karns City | 163 |
| City | 2026 Pop. ↓ |
|---|---|
| Oil City | 9,258 |
| O'Hara | 8,939 |
| Old Forge | 8,740 |
| Ohio | 7,418 |
| Oakmont | 6,559 |
| Oxford | 6,168 |
| Oxford | 5,997 |
| Olyphant | 5,409 |
| Old Lycoming | 4,936 |
| Oley | 3,960 |
| Ohioville | 3,291 |
| Ontelaunee | 3,254 |
| Orwigsburg | 3,024 |
| Oakland | 2,670 |
| Oliver | 2,122 |
| Oliver | 2,028 |
| Oil Creek | 1,654 |
| Otto | 1,457 |
| Overfield | 1,418 |
| Oakdale | 1,402 |
| Oakland | 1,338 |
| Orwell | 1,229 |
| Orange | 1,181 |
| Osceola Mills | 997 |
| Oneida | 981 |
| Oliver | 971 |
| Oregon | 834 |
| Oklahoma | 759 |
| Oil Creek | 727 |
| Osceola | 577 |
| Oakland | 545 |
| Otter Creek | 506 |
| Oakland | 501 |
| Orangeville | 476 |
| Ogle | 466 |
| Orbisonia | 431 |
| Overton | 240 |
| Oswayo | 221 |
| Orrstown | 212 |
| Oswayo | 129 |
| Ohiopyle | 35 |
| City | 2026 Pop. ↓ |
|---|---|
| Quakertown | 9,269 |
| Quincy | 5,295 |
| Quarryville | 2,882 |
| Quemahoning | 1,768 |
| City | 2026 Pop. ↓ |
|---|---|
| Tredyffrin | 32,329 |
| Towamencin | 18,265 |
| Tobyhanna | 8,368 |
| Thornbury | 7,079 |
| Tamaqua | 6,962 |
| Tunkhannock | 6,912 |
| Taylor | 6,240 |
| Tyrone | 5,239 |
| Titusville | 5,106 |
| Telford | 5,001 |
| Turtle Creek | 4,831 |
| Towamensing | 4,655 |
| Throop | 4,156 |
| Trappe | 4,117 |
| Tarentum | 4,103 |
| Tinicum | 4,065 |
| Tunkhannock | 3,894 |
| Tinicum | 3,874 |
| Tilden | 3,795 |
| Tulpehocken | 3,738 |
| Thornbury | 3,220 |
| Trafford | 3,198 |
| Towanda | 2,762 |
| Tyrone | 2,359 |
| Texas | 2,263 |
| Tullytown | 2,249 |
| Taylor | 2,243 |
| Topton | 2,074 |
| Tyrone | 2,004 |
| Trainer | 1,987 |
| Tyrone | 1,827 |
| Turbot | 1,802 |
| Tunkhannock | 1,709 |
| Tremont | 1,696 |
| Todd | 1,590 |
| Troy | 1,565 |
| Tatamy | 1,493 |
| Tower City | 1,443 |
| Tuscarora | 1,372 |
| Terre Hill | 1,285 |
| Troy | 1,239 |
| Tuscarora | 1,129 |
| Tuscarora | 1,062 |
| Taylor | 1,053 |
| Troy | 1,045 |
| Towanda | 1,031 |
| Thompson | 1,029 |
| Thornhurst | 1,020 |
| Turbett | 969 |
| Taylor | 958 |
| Toby | 956 |
| Tioga | 916 |
| Terry | 902 |
| Todd | 887 |
| Trumbauersville | 876 |
| Taylor | 860 |
| Turbotville | 655 |
| Thompsontown | 640 |
| Tionesta | 613 |
| Tidioute | 598 |
| Tioga | 597 |
| Tell | 560 |
| Toboyne | 486 |
| Thornburg | 441 |
| Thompson | 427 |
| Three Springs | 426 |
| Tionesta | 394 |
| Townville | 319 |
| Tunnelhill | 304 |
| Tremont | 286 |
| Triumph | 259 |
| Thompson | 247 |
| Troutville | 224 |
| Twilight | 219 |
| Timblin | 142 |
| City | 2026 Pop. ↓ |
|---|---|
| Valley | 8,158 |
| Vernon | 5,251 |
| Vandergrift | 4,898 |
| Verona | 2,357 |
| Venango | 2,202 |
| Valley | 2,153 |
| Versailles | 1,396 |
| Vanport | 1,252 |
| Venango | 936 |
| Venango | 822 |
| Valencia | 756 |
| Vandling | 721 |
| Valley | 622 |
| Vintondale | 397 |
| Vanderbilt | 390 |
| Victory | 381 |
| Venango | 206 |
| Volant | 119 |
| Valley-Hi | 9 |
| City | 2026 Pop. ↓ |
|---|---|
| York | 45,469 |
| York | 32,482 |
| Yeadon | 12,590 |
| Youngwood | 2,875 |
| Yardley | 2,585 |
| Young | 1,683 |
| Young | 1,643 |
| Youngsville | 1,631 |
| Yoe | 1,065 |
| York Springs | 713 |
| York Haven | 697 |
| Yatesville | 652 |
| Youngstown | 240 |
| Yorkana | 238 |
| City | 2026 Pop. ↓ |
|---|---|
| Zelienople | 3,701 |
| Zerbe | 1,769 |