46 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 15701 | Indiana | 31,236 |
| 15717 | Blairsville | 9,563 |
| 15748 | Homer City | 7,153 |
| 15681 | Saltsburg | 4,506 |
| 15728 | Clymer | 3,468 |
| 15705 | Indiana | 3,070 |
| 15759 | Marion Center | 2,778 |
| 15954 | Seward | 2,186 |
| 15724 | Cherry Tree | 2,069 |
| 16256 | Smicksburg | 1,925 |
| 15747 | Home | 1,796 |
| 15732 | Creekside | 1,637 |
| 15772 | Rossiter | 1,544 |
| 15765 | Penn Run | 1,538 |
| 15725 | Clarksburg | 1,208 |
| 15729 | Commodore | 1,122 |
| 15742 | Glen Campbell | 1,007 |
| 15771 | Rochester Mills | 868 |
| 15961 | Vintondale | 823 |
| 15949 | Robinson | 727 |
| 15920 | Armagh | 691 |
| 15716 | Black Lick | 494 |
| 15754 | Lucernemines | 382 |
| 15739 | Ernest | 368 |
| 15957 | Strongstown | 317 |
| 15750 | Josephine | 308 |
| 15720 | Brush Valley | 305 |
| 15745 | Heilwood | 229 |
| 15727 | Clune | 220 |
| 15710 | Alverda | 206 |
| 16211 | Beyer | 203 |
| 15731 | Coral | 191 |
| 16246 | Plumville | 189 |
| 15734 | Dixonville | 154 |
| 15929 | Dilltown | 146 |
| 15761 | Mentcle | 145 |
| 15756 | McIntyre | 141 |
| 15713 | Aultman | 128 |
| 15712 | Arcadia | 119 |
| 15746 | Hillsdale | 94 |
| 15752 | Kent | 93 |
| 15741 | Gipsy | 54 |
| 15783 | West Lebanon | 52 |
| 15777 | Starford | 33 |
| 15763 | Northpoint | 22 |
| 15723 | Chambersville | 11 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 46 ZCTAs in Indiana County, Pennsylvania (US Census).