| City | 2026 Pop. ↓ |
|---|---|
| Allentown | 126,067 |
| Abington | 58,547 |
| Altoona | 42,027 |
| Aston | 16,755 |
| Antrim | 16,627 |
| Adams | 16,156 |
| Amity | 13,620 |
| Aliquippa | 8,947 |
| Allegheny | 8,099 |
| Archbald | 7,644 |
| Ambridge | 6,925 |
| Ambler | 6,854 |
| Allegheny | 6,547 |
| Antis | 6,322 |
| Allen | 5,781 |
| Adams | 5,516 |
| Athens | 5,149 |
| Annville | 5,068 |
| Arnold | 4,588 |
| Avalon | 4,523 |
| Aldan | 4,252 |
| Armagh | 4,112 |
| Akron | 4,082 |
| Alsace | 3,960 |
| Amwell | 3,642 |
| Athens | 3,191 |
| Aspinwall | 2,778 |
| Armstrong | 2,735 |
| Allegheny | 2,701 |
| Ashley | 2,636 |
| Alburtis | 2,613 |
| Avoca | 2,562 |
| Ashland | 2,525 |
| Ayr | 1,986 |
| Adamstown | 1,958 |
| Aleppo | 1,748 |
| Auburn | 1,740 |
| Albany | 1,734 |
| Apollo | 1,523 |
| Anthony | 1,476 |
| Albion | 1,470 |
| Avis | 1,459 |
| Atglen | 1,403 |
| Avondale | 1,263 |
| Ashland | 1,086 |
| Abbottstown | 1,054 |
| Asylum | 999 |
| Amity | 975 |
| Addison | 913 |
| Adams | 897 |
| Arendtsville | 894 |
| Albany | 871 |
| Avonmore | 868 |
| Anthony | 846 |
| Annin | 727 |
| Auburn | 678 |
| Armstrong | 673 |
| Athens | 632 |
| Allegheny | 614 |
| Allegheny | 605 |
| Ararat | 516 |
| Allenport | 466 |
| Austin | 459 |
| Apolacon | 424 |
| Aleppo | 399 |
| Allegany | 388 |
| Alexandria | 364 |
| Applewold | 320 |
| Allegheny | 283 |
| Arona | 242 |
| Addison | 225 |
| Allison | 221 |
| Abbott | 220 |
| Ashville | 205 |
| Armenia | 204 |
| Alba | 136 |
| Adamsburg | 135 |
| Atwood | 103 |
| Armagh | 98 |
| City | 2026 Pop. ↓ |
|---|---|
| Indiana | 14,883 |
| Indiana | 7,482 |
| Irwin | 3,736 |
| Ingram | 3,186 |
| Independence | 2,240 |
| Industry | 1,772 |
| Independence | 1,479 |
| Irwin | 1,226 |
| Ivyland | 940 |
| Irvona | 524 |
| Indian Lake | 377 |
| City | 2026 Pop. ↓ |
|---|---|
| Johnstown | 17,514 |
| Jefferson Hills | 12,312 |
| Jackson | 9,428 |
| Jackson | 9,377 |
| Jeannette | 8,434 |
| Jackson | 7,077 |
| Jackson | 6,506 |
| Jefferson | 5,091 |
| Jenkintown | 4,783 |
| Jenkins | 4,582 |
| Jackson | 4,551 |
| Jim Thorpe | 4,539 |
| Jessup | 4,501 |
| Jackson | 4,040 |
| Jersey Shore | 4,030 |
| Jefferson | 3,914 |
| Jenks | 3,709 |
| Jenner | 3,548 |
| Jefferson | 2,431 |
| Johnsonburg | 2,269 |
| Jefferson | 2,184 |
| Jermyn | 2,107 |
| Jefferson | 1,905 |
| Jay | 1,872 |
| Jackson | 1,853 |
| Jefferson | 1,842 |
| Jackson | 1,841 |
| Jacobus | 1,839 |
| Jonestown | 1,671 |
| Jackson | 1,612 |
| Juniata | 1,568 |
| Jones | 1,524 |
| Jefferson | 1,398 |
| Jackson | 1,200 |
| Jefferson | 1,110 |
| Jackson | 956 |
| Juniata | 934 |
| Jackson | 924 |
| Juniata | 905 |
| Jackson | 886 |
| Jackson | 838 |
| Jordan | 829 |
| Jordan | 764 |
| Jefferson | 657 |
| Jennerstown | 653 |
| Jackson | 629 |
| Jackson | 599 |
| Jamestown | 552 |
| Juniata Terrace | 547 |
| Jessup | 489 |
| Jordan | 481 |
| Juniata | 441 |
| Jackson | 394 |
| Jefferson | 366 |
| Jackson | 362 |
| Jefferson | 236 |
| Jackson Center | 187 |
| Jeddo | 102 |
| City | 2026 Pop. ↓ |
|---|---|
| Kingston | 13,491 |
| Kennett | 9,273 |
| Kennedy | 8,432 |
| Kingston | 7,257 |
| Kennett Square | 7,074 |
| Kiskiminetas | 4,528 |
| Kutztown | 4,267 |
| Kittanning | 3,940 |
| Kelly | 3,536 |
| Kane | 3,425 |
| Kenhorst | 3,034 |
| Kulpmont | 2,673 |
| Keating | 2,611 |
| Kittanning | 2,008 |
| Kidder | 1,867 |
| Kimmel | 1,506 |
| Kline | 1,485 |
| King | 1,171 |
| Knox | 1,061 |
| Knox | 977 |
| Knox | 976 |
| Kilbuck | 737 |
| Koppel | 689 |
| Karthaus | 673 |
| Knoxville | 662 |
| Knox | 579 |
| Kistler | 289 |
| Keating | 282 |
| Kingsley | 249 |
| Karns City | 158 |
| City | 2026 Pop. ↓ |
|---|---|
| Oil City | 9,243 |
| O'Hara | 8,881 |
| Old Forge | 8,678 |
| Ohio | 7,232 |
| Oakmont | 6,535 |
| Oxford | 6,114 |
| Oxford | 5,920 |
| Olyphant | 5,392 |
| Old Lycoming | 4,909 |
| Oley | 3,883 |
| Ohioville | 3,309 |
| Ontelaunee | 3,277 |
| Orwigsburg | 3,007 |
| Oakland | 2,699 |
| Oliver | 2,109 |
| Oliver | 2,047 |
| Oil Creek | 1,650 |
| Otto | 1,461 |
| Overfield | 1,425 |
| Oakdale | 1,398 |
| Oakland | 1,331 |
| Orwell | 1,200 |
| Orange | 1,194 |
| Osceola Mills | 999 |
| Oneida | 989 |
| Oliver | 978 |
| Oregon | 829 |
| Oklahoma | 758 |
| Oil Creek | 735 |
| Osceola | 568 |
| Oakland | 546 |
| Otter Creek | 506 |
| Oakland | 503 |
| Orangeville | 475 |
| Ogle | 471 |
| Orbisonia | 411 |
| Overton | 241 |
| Oswayo | 219 |
| Orrstown | 209 |
| Oswayo | 126 |
| Ohiopyle | 35 |
| City | 2026 Pop. ↓ |
|---|---|
| Quakertown | 9,211 |
| Quincy | 5,282 |
| Quarryville | 2,876 |
| Quemahoning | 1,785 |
| City | 2026 Pop. ↓ |
|---|---|
| Tredyffrin | 31,762 |
| Towamencin | 17,888 |
| Tobyhanna | 8,415 |
| Tunkhannock | 6,981 |
| Thornbury | 6,965 |
| Tamaqua | 6,934 |
| Taylor | 6,225 |
| Tyrone | 5,185 |
| Titusville | 5,082 |
| Telford | 4,984 |
| Turtle Creek | 4,812 |
| Towamensing | 4,621 |
| Throop | 4,126 |
| Tarentum | 4,081 |
| Trappe | 4,076 |
| Tinicum | 3,983 |
| Tunkhannock | 3,958 |
| Tinicum | 3,795 |
| Tilden | 3,734 |
| Tulpehocken | 3,731 |
| Trafford | 3,189 |
| Thornbury | 3,159 |
| Towanda | 2,735 |
| Tyrone | 2,365 |
| Texas | 2,266 |
| Taylor | 2,254 |
| Tullytown | 2,221 |
| Topton | 2,066 |
| Trainer | 1,971 |
| Tyrone | 1,967 |
| Tyrone | 1,804 |
| Turbot | 1,791 |
| Tunkhannock | 1,709 |
| Tremont | 1,699 |
| Todd | 1,617 |
| Troy | 1,569 |
| Tatamy | 1,439 |
| Tower City | 1,437 |
| Tuscarora | 1,356 |
| Terre Hill | 1,278 |
| Troy | 1,222 |
| Tuscarora | 1,135 |
| Tuscarora | 1,058 |
| Taylor | 1,057 |
| Thompson | 1,041 |
| Troy | 1,036 |
| Towanda | 1,022 |
| Thornhurst | 1,015 |
| Taylor | 971 |
| Turbett | 969 |
| Toby | 966 |
| Tioga | 925 |
| Todd | 896 |
| Terry | 891 |
| Trumbauersville | 879 |
| Taylor | 832 |
| Turbotville | 656 |
| Thompsontown | 631 |
| Tionesta | 630 |
| Tioga | 599 |
| Tidioute | 594 |
| Tell | 552 |
| Toboyne | 490 |
| Thornburg | 442 |
| Thompson | 427 |
| Three Springs | 425 |
| Tionesta | 393 |
| Townville | 313 |
| Tunnelhill | 299 |
| Tremont | 279 |
| Triumph | 260 |
| Thompson | 245 |
| Twilight | 235 |
| Troutville | 224 |
| Timblin | 138 |
| City | 2026 Pop. ↓ |
|---|---|
| Valley | 8,198 |
| Vernon | 5,209 |
| Vandergrift | 4,870 |
| Verona | 2,370 |
| Venango | 2,200 |
| Valley | 2,096 |
| Versailles | 1,390 |
| Vanport | 1,257 |
| Venango | 932 |
| Venango | 834 |
| Valencia | 717 |
| Vandling | 713 |
| Valley | 627 |
| Vintondale | 396 |
| Vanderbilt | 391 |
| Victory | 372 |
| Venango | 203 |
| Volant | 122 |
| Valley-Hi | 5 |
| City | 2026 Pop. ↓ |
|---|---|
| York | 45,408 |
| York | 31,836 |
| Yeadon | 12,393 |
| Youngwood | 2,861 |
| Yardley | 2,571 |
| Young | 1,667 |
| Young | 1,662 |
| Youngsville | 1,621 |
| Yoe | 1,058 |
| York Springs | 703 |
| York Haven | 687 |
| Yatesville | 652 |
| Yorkana | 236 |
| Youngstown | 236 |
| City | 2026 Pop. ↓ |
|---|---|
| Zelienople | 3,717 |
| Zerbe | 1,765 |