| 1 | Harrison City CDP (west-northwest) | 6,846 |
| 2 | Murrysville municipality (north) | 6,787 |
| 3 | Level Green CDP | 6,522 |
| 4 | Manor borough (southwest) | 6,167 |
| 5 | Trafford borough (south) | 6,104 |
| 6 | Greensburg city (east-northeast) | 6,026 |
| 7 | West Leechburg borough (south) | 5,765 |
| 8 | St. Vincent College CDP (east) | 5,660 |
| 9 | Murrysville municipality (northwest) | 5,538 |
| 10 | Herminie CDP (north-northwest) | 5,330 |
| 11 | Lower Burrell city (north) | 5,324 |
| 12 | Youngwood borough (east-northeast) | 5,254 |
| 13 | New Florence borough | 4,944 |
| 14 | Hostetter CDP (east) | 4,841 |
| 15 | Scottdale borough (northwest) | 4,660 |
| 16 | Irwin borough (east) | 4,607 |
| 17 | Calumet CDP (north-northeast) | 4,557 |
| 18 | Laurel Mountain borough | 4,512 |
| 19 | Harrison City CDP (east-northeast) | 4,448 |
| 20 | Slickville CDP (northwest) | 4,317 |
| 21 | West Leechburg borough (north) | 4,245 |
| 22 | Grapeville CDP (north) | 4,225 |
| 23 | Donegal borough (south-southwest) | 4,180 |
| 24 | Millwood CDP | 4,153 |
| 25 | Lower Burrell city (north-northwest) | 4,137 |
| 26 | Avonmore borough (north-northwest) | 4,120 |
| 27 | Irwin borough (south-southwest) | 4,106 |
| 28 | Mammoth CDP (west-southwest) | 4,100 |
| 29 | Irwin borough (north) | 3,972 |
| 30 | Collinsburg CDP (north) | 3,897 |
| 31 | Delmont borough | 3,875 |
| 32 | Sutersville borough (north-northwest) | 3,785 |
| 33 | Southwest Greensburg borough (east-northeast) | 3,771 |
| 34 | Loyalhanna CDP (east) | 3,749 |
| 35 | Grapeville CDP (east-northeast) | 3,715 |
| 36 | Webster CDP (south-southwest) | 3,667 |
| 37 | Wyano CDP | 3,640 |
| 38 | Herminie CDP (south) | 3,572 |
| 39 | Sutersville borough (north-northeast) | 3,515 |
| 40 | Herminie CDP (east-northeast) | 3,478 |
| 41 | Jeannette city (northeast) | 3,354 |
| 42 | New Alexandria borough (north) | 3,314 |
| 43 | Export borough | 3,286 |
| 44 | Crabtree CDP | 3,224 |
| 45 | Mammoth CDP (east-northeast) | 3,198 |
| 46 | Trafford borough (north) | 3,193 |
| 47 | Loyalhanna CDP (west) | 3,154 |
| 48 | Collinsburg CDP (south) | 3,057 |
| 49 | Greensburg city (west-southwest) | 3,034 |
| 50 | Hunker borough (south) | 2,986 |
| 51 | Youngwood borough (west-southwest) | 2,936 |
| 52 | Southwest Greensburg borough (northwest) | 2,927 |
| 53 | Webster CDP (northeast) | 2,917 |
| 54 | Calumet CDP (north-northwest) | 2,893 |
| 55 | Arona borough (southwest) | 2,888 |
| 56 | Arona borough (west-northwest) | 2,849 |
| 57 | Slickville CDP (southeast) | 2,835 |
| 58 | Manor borough (northeast) | 2,814 |
| 59 | Bradenville CDP | 2,778 |
| 60 | Calumet CDP (south-southeast) | 2,772 |
| 61 | Hostetter CDP (west) | 2,748 |
| 62 | East Vandergrift borough (southwest) | 2,693 |
| 63 | Latrobe borough | 2,664 |
| 64 | Mount Pleasant borough (west-northwest) | 2,660 |
| 65 | South Greensburg borough (east-northeast) | 2,650 |
| 66 | West Newton borough | 2,630 |
| 67 | Derry borough | 2,616 |
| 68 | Hunker borough (north) | 2,599 |
| 69 | Sutersville borough (south) | 2,587 |
| 70 | New Kensington city (northwest) | 2,571 |
| 71 | Avonmore borough (west) | 2,542 |
| 72 | Arnold city (north-northeast) | 2,501 |
| 73 | Murrysville municipality (east-northeast) | 2,445 |
| 74 | Scottdale borough (east) | 2,408 |
| 75 | New Kensington city (southeast) | 2,401 |
| 76 | Trafford borough (east) | 2,377 |
| 77 | Murrysville municipality (south) | 2,359 |
| 78 | South Greensburg borough (southeast) | 2,357 |
| 79 | New Stanton borough | 2,338 |
| 80 | Grapeville CDP (southwest) | 2,248 |
| 81 | Jeannette city (southwest) | 2,213 |
| 82 | Lower Burrell city (east) | 2,198 |
| 83 | New Alexandria borough (south-southeast) | 2,184 |
| 84 | Smithton borough (east-northeast) | 2,137 |
| 85 | St. Vincent College CDP (west) | 2,109 |
| 86 | Arona borough (east-northeast) | 2,095 |
| 87 | Lower Burrell city (west-southwest) | 2,082 |
| 88 | Lower Burrell city (east-southeast) | 2,048 |
| 89 | Grapeville CDP (west) | 2,014 |
| 90 | Arnold city (south-southeast) | 1,985 |
| 91 | Scottdale borough (south-southeast) | 1,984 |
| 92 | Southwest Greensburg borough (south-southwest) | 1,927 |
| 93 | Harrison City CDP (southeast) | 1,833 |
| 94 | Adamsburg borough | 1,811 |
| 95 | New Alexandria borough (west-southwest) | 1,809 |
| 96 | Monessen city | 1,764 |
| 97 | Donegal borough (north-northeast) | 1,676 |
| 98 | North Belle Vernon borough | 1,650 |
| 99 | Avonmore borough (east-southeast) | 1,641 |
| 100 | Vandergrift borough | 1,606 |
| 101 | Lower Burrell city (southwest) | 1,593 |
| 102 | Ligonier borough | 1,562 |
| 103 | Mount Pleasant borough (east-southeast) | 1,555 |
| 104 | Smithton borough (west-southwest) | 1,534 |
| 105 | Arnold city (north) | 1,440 |
| 106 | Webster CDP (west) | 1,394 |
| 107 | East Vandergrift borough (northeast) | 1,379 |
| 108 | Arona borough (east) | 1,366 |
| 109 | Grapeville CDP (east-southeast) | 1,338 |
| 110 | Arnold city (south-southwest) | 1,228 |
| 111 | South Greensburg borough (west-northwest) | 1,210 |
| 112 | South Greensburg borough (south-southwest) | 1,057 |
| 113 | Arnold city (west-southwest) | 1,009 |