Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pittsburgh | 1 | 303,413 | 302,779 | 0.05% | 5,479 | 55.4 | City |
| Penn Hills township | 2 | 39,182 | 40,992 | -1.16% | 2,047 | 19.1 | Township |
| Mount Lebanon township | 3 | 32,671 | 34,020 | -0.81% | 5,375 | 6.1 | Township |
| Ross township | 4 | 32,062 | 33,528 | -1.14% | 2,215 | 14.5 | Township |
| Bethel Park | 5 | 32,025 | 33,515 | -1.15% | 2,737 | 11.7 | Township |
| McCandless township | 6 | 28,391 | 29,664 | -0.98% | 1,722 | 16.5 | Township |
| Monroeville | 7 | 27,749 | 28,649 | -0.8% | 1,407 | 19.7 | Township |
| Shaler township | 8 | 26,807 | 28,083 | -1.14% | 2,422 | 11.1 | Township |
| Moon township | 9 | 26,476 | 27,216 | -0.44% | 1,109 | 23.9 | Township |
| Plum | 10 | 26,140 | 27,142 | -0.95% | 915 | 28.6 | Borough |
| Baldwin | 11 | 20,452 | 21,474 | -1.24% | 3,545 | 5.8 | Borough |
| Upper St. Clair township | 12 | 20,373 | 21,137 | -1.01% | 2,075 | 9.8 | Township |
| West Mifflin | 13 | 18,699 | 19,565 | -1.15% | 1,315 | 14.2 | Borough |
| South Fayette township | 14 | 18,444 | 18,352 | 0.01% | 909 | 20.3 | Township |
| Hampton township | 15 | 17,767 | 18,464 | -0.97% | 1,096 | 16.2 | Township |
| McKeesport | 16 | 16,939 | 17,709 | -1.13% | 3,355 | 5.0 | City |
| Scott township | 17 | 16,824 | 17,619 | -1.1% | 4,320 | 3.9 | Township |
| North Fayette township | 18 | 15,919 | 16,190 | -0.59% | 632 | 25.2 | Township |
| Pine township | 19 | 15,495 | 14,744 | 0.69% | 913 | 17.0 | Township |
| Franklin Park | 20 | 14,868 | 15,492 | -1.04% | 1,098 | 13.5 | Borough |
| South Park township | 21 | 13,681 | 13,718 | 0.21% | 1,465 | 9.3 | Township |
| Wilkinsburg | 22 | 13,641 | 14,327 | -1.24% | 6,055 | 2.3 | Borough |
| Elizabeth township | 23 | 12,376 | 12,957 | -1.1% | 543 | 22.8 | Township |
| Jefferson Hills | 24 | 12,095 | 12,427 | -0.68% | 729 | 16.6 | Borough |
| West Deer township | 25 | 12,000 | 12,267 | -0.93% | 415 | 28.9 | Township |
| Lower Burrell | 26 | 11,501 | 11,739 | -0.52% | 1,020 | 11.3 | City |
| Munhall | 27 | 10,252 | 10,764 | -1.23% | 4,471 | 2.3 | Borough |
| Marshall township | 28 | 10,111 | 10,147 | -0.28% | 655 | 15.4 | Township |
| Harrison township | 29 | 9,676 | 10,157 | -1.16% | 1,310 | 7.4 | Township |
| North Versailles township | 30 | 9,590 | 10,061 | -1.17% | 1,199 | 8.0 | Township |
| Brentwood | 31 | 9,585 | 10,069 | -1.25% | 6,615 | 1.4 | Borough |
| Collier township | 32 | 8,926 | 8,945 | -0.03% | 656 | 13.6 | Township |
| Economy | 33 | 8,921 | 9,084 | -0.46% | 499 | 17.9 | Borough |
| O'Hara township | 34 | 8,877 | 9,272 | -1.07% | 1,266 | 7.0 | Township |
| Kennedy township | 35 | 8,342 | 8,697 | -1.11% | 1,521 | 5.5 | Township |
| Pleasant Hills | 36 | 8,267 | 8,487 | -0.66% | 2,978 | 2.8 | Borough |
| Swissvale | 37 | 8,185 | 8,604 | -1.27% | 6,787 | 1.2 | Borough |
| Castle Shannon | 38 | 8,038 | 8,290 | -0.78% | 5,030 | 1.6 | Borough |
| Bellevue | 39 | 7,900 | 8,300 | -1.25% | 7,822 | 1.0 | Borough |
| Dormont | 40 | 7,831 | 8,227 | -1.25% | 10,304 | 0.8 | Borough |
| Carnegie | 41 | 7,755 | 8,122 | -1.17% | 4,784 | 1.6 | Borough |
| Ohio township | 42 | 7,331 | 7,168 | 1.05% | 1,070 | 6.9 | Township |
| White Oak | 43 | 7,255 | 7,617 | -1.24% | 1,096 | 6.6 | Borough |
| Oakmont | 44 | 6,579 | 6,767 | -0.71% | 4,153 | 1.6 | Borough |
| Findlay township | 45 | 6,557 | 6,409 | 0.17% | 203 | 32.3 | Township |
| West View | 46 | 6,357 | 6,676 | -1.24% | 6,294 | 1.0 | Borough |
| Stowe township | 47 | 6,119 | 6,421 | -1.16% | 3,087 | 2.0 | Township |
| Forest Hills | 48 | 6,112 | 6,418 | -1.24% | 3,905 | 1.6 | Borough |
| Wilkins township | 49 | 6,052 | 6,344 | -1.14% | 2,208 | 2.7 | Township |
| Clairton | 50 | 5,875 | 6,171 | -1.24% | 2,122 | 2.8 | City |
| Crafton | 51 | 5,793 | 6,085 | -1.24% | 5,073 | 1.1 | Borough |
| McKees Rocks | 52 | 5,624 | 5,908 | -1.25% | 5,326 | 1.1 | Borough |
| Sewickley township | 53 | 5,557 | 5,648 | -0.21% | 208 | 26.8 | Township |
| Coraopolis | 54 | 5,277 | 5,544 | -1.25% | 3,968 | 1.3 | Borough |
| Fox Chapel | 55 | 5,127 | 5,337 | -1.02% | 652 | 7.9 | Borough |
| Duquesne | 56 | 5,015 | 5,243 | -1.12% | 2,762 | 1.8 | City |
| Turtle Creek | 57 | 4,868 | 5,111 | -1.24% | 5,003 | 1.0 | Borough |
| Green Tree | 58 | 4,697 | 4,929 | -1.22% | 2,264 | 2.1 | Borough |
| Arnold | 59 | 4,643 | 4,774 | -0.71% | 6,343 | 0.7 | City |
| Bridgeville | 60 | 4,565 | 4,793 | -1.23% | 4,169 | 1.1 | Borough |
| Avalon | 61 | 4,530 | 4,760 | -1.26% | 7,342 | 0.6 | Borough |
| Glassport | 62 | 4,247 | 4,463 | -1.26% | 2,685 | 1.6 | Borough |
| Tarentum | 63 | 4,135 | 4,343 | -1.24% | 3,362 | 1.2 | Borough |
| North Braddock | 64 | 4,100 | 4,310 | -1.28% | 2,748 | 1.5 | Borough |
| Elizabeth township | 65 | 3,963 | 3,980 | -0.1% | 228 | 17.4 | Township |
| Sewickley | 66 | 3,728 | 3,902 | -1.17% | 3,732 | 1.0 | Borough |
| Port Vue | 67 | 3,533 | 3,672 | -0.98% | 3,116 | 1.1 | Borough |
| Etna | 68 | 3,268 | 3,432 | -1.24% | 4,440 | 0.7 | Borough |
| Springdale | 69 | 3,232 | 3,395 | -1.25% | 3,460 | 0.9 | Borough |
| Mount Oliver | 70 | 3,219 | 3,385 | -1.29% | 9,496 | 0.3 | Borough |
| Ingram | 71 | 3,217 | 3,383 | -1.29% | 7,412 | 0.4 | Borough |
| Millvale | 72 | 3,210 | 3,368 | -1.23% | 5,186 | 0.6 | Borough |
| Reserve township | 73 | 3,118 | 3,244 | -0.86% | 1,511 | 2.1 | Township |
| Brackenridge | 74 | 3,089 | 3,239 | -1.21% | 6,021 | 0.5 | Borough |
| Sharpsburg | 75 | 3,023 | 3,177 | -1.27% | 6,259 | 0.5 | Borough |
| Churchill | 76 | 2,997 | 3,148 | -1.25% | 1,370 | 2.2 | Borough |
| Harmar township | 77 | 2,990 | 3,131 | -1.16% | 510 | 5.9 | Township |
| Edgewood | 78 | 2,989 | 3,135 | -1.22% | 5,083 | 0.6 | Borough |
| Pitcairn | 79 | 2,949 | 3,100 | -1.27% | 5,828 | 0.5 | Borough |
| Forward township | 80 | 2,916 | 3,063 | -1.19% | 154 | 18.9 | Township |
| Homestead | 81 | 2,843 | 2,881 | -0.35% | 4,936 | 0.6 | Borough |
| Seven Fields | 82 | 2,842 | 2,921 | -0.7% | 3,530 | 0.8 | Borough |
| Aspinwall | 83 | 2,770 | 2,912 | -1.28% | 7,892 | 0.4 | Borough |
| Emsworth | 84 | 2,395 | 2,517 | -1.28% | 4,209 | 0.6 | Borough |
| Crescent township | 85 | 2,366 | 2,477 | -1.21% | 1,131 | 2.1 | Township |
| Verona | 86 | 2,365 | 2,485 | -1.25% | 4,665 | 0.5 | Borough |
| Morgan township | 87 | 2,198 | 2,331 | -1.17% | 89 | 24.7 | Township |
| Fawn township | 88 | 2,102 | 2,191 | -0.99% | 164 | 12.9 | Township |
| McDonald | 89 | 2,005 | 2,053 | -0.6% | 3,871 | 0.5 | Borough |
| East McKeesport | 90 | 1,966 | 2,068 | -1.31% | 4,760 | 0.4 | Borough |
| Baldwin township | 91 | 1,899 | 1,980 | -0.94% | 3,760 | 0.5 | Township |
| East Pittsburgh | 92 | 1,831 | 1,925 | -1.29% | 4,719 | 0.4 | Borough |
| Ben Avon | 93 | 1,827 | 1,919 | -1.24% | 4,821 | 0.4 | Borough |
| Rankin | 94 | 1,797 | 1,889 | -1.26% | 4,150 | 0.4 | Borough |
| West Homestead | 95 | 1,781 | 1,868 | -1.22% | 1,932 | 0.9 | Borough |
| Wilmerding | 96 | 1,693 | 1,779 | -1.28% | 3,946 | 0.4 | Borough |
| Braddock | 97 | 1,653 | 1,720 | -1.02% | 2,936 | 0.6 | Borough |
| Braddock Hills | 98 | 1,645 | 1,729 | -1.26% | 1,735 | 0.9 | Borough |
| Edgeworth | 99 | 1,611 | 1,673 | -0.98% | 1,077 | 1.5 | Borough |
| Cheswick | 100 | 1,592 | 1,670 | -1.24% | 3,438 | 0.5 | Borough |
| Leet township | 101 | 1,548 | 1,619 | -1.09% | 1,031 | 1.5 | Township |
| Dravosburg | 102 | 1,535 | 1,610 | -1.22% | 1,589 | 1.0 | Borough |
| Springdale township | 103 | 1,461 | 1,534 | -1.15% | 648 | 2.3 | Township |
| Bell Acres | 104 | 1,451 | 1,507 | -0.96% | 271 | 5.4 | Borough |
| East Deer township | 105 | 1,418 | 1,487 | -1.12% | 624 | 2.3 | Township |
| Oakdale | 106 | 1,411 | 1,478 | -1.19% | 3,009 | 0.5 | Borough |
| Versailles | 107 | 1,408 | 1,479 | -1.26% | 2,909 | 0.5 | Borough |
| Blawnox | 108 | 1,384 | 1,454 | -1.28% | 4,676 | 0.3 | Borough |
| Elizabeth | 109 | 1,342 | 1,392 | -0.96% | 3,913 | 0.3 | Borough |
| Frazer township | 110 | 1,322 | 1,164 | 7.57% | 142 | 9.3 | Township |
| Heidelberg | 111 | 1,223 | 1,286 | -1.29% | 4,261 | 0.3 | Borough |
| Bradford Woods | 112 | 1,130 | 1,185 | -1.22% | 1,268 | 0.9 | Borough |
| Whitaker | 113 | 1,120 | 1,178 | -1.32% | 3,784 | 0.3 | Borough |
| Leetsdale | 114 | 1,111 | 1,162 | -1.16% | 1,112 | 1.0 | Borough |
| Neville township | 115 | 1,053 | 1,105 | -1.13% | 688 | 1.5 | Township |
| Lincoln | 116 | 883 | 930 | -1.34% | 184 | 4.8 | Borough |
| Sewickley Heights | 117 | 820 | 854 | -1.09% | 112 | 7.3 | Borough |
| North Irwin | 118 | 811 | 821 | -0.37% | 4,015 | 0.2 | Borough |
| Chalfant | 119 | 709 | 747 | -1.39% | 4,487 | 0.2 | Borough |
| Sewickley Hills | 120 | 686 | 693 | -0.29% | 278 | 2.5 | Borough |
| Pennsbury Village | 121 | 641 | 675 | -1.39% | 8,547 | 0.1 | Borough |
| Glen Osborne | 122 | 560 | 587 | -1.23% | 1,302 | 0.4 | Borough |
| Wall | 123 | 491 | 515 | -1.21% | 1,124 | 0.4 | Borough |
| Thornburg | 124 | 446 | 468 | -1.33% | 1,018 | 0.4 | Borough |
| Rosslyn Farms | 125 | 419 | 439 | -1.18% | 755 | 0.6 | Borough |
| West Elizabeth | 126 | 383 | 403 | -1.29% | 2,140 | 0.2 | Borough |
| Ben Avon Heights | 127 | 380 | 398 | -1.3% | 2,184 | 0.2 | Borough |
| Glenfield | 128 | 199 | 210 | -1.49% | 243 | 0.8 | Borough |
| Haysville | 129 | 78 | 82 | -1.27% | 451 | 0.2 | Borough |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Pittsburgh is the largest city in Allegheny County.
Haysville is the smallest city in Allegheny County.
There are 129 cities in Allegheny County, Pennsylvania.