46 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 15701 | Indiana | 30,941 |
| 15717 | Blairsville | 9,438 |
| 15748 | Homer City | 7,071 |
| 15681 | Saltsburg | 4,581 |
| 15728 | Clymer | 3,475 |
| 15705 | Indiana | 3,218 |
| 15759 | Marion Center | 2,906 |
| 15954 | Seward | 2,409 |
| 15724 | Cherry Tree | 2,262 |
| 16256 | Smicksburg | 2,030 |
| 15747 | Home | 1,737 |
| 15772 | Rossiter | 1,656 |
| 15765 | Penn Run | 1,634 |
| 15732 | Creekside | 1,427 |
| 15725 | Clarksburg | 1,252 |
| 15742 | Glen Campbell | 1,040 |
| 15729 | Commodore | 950 |
| 15771 | Rochester Mills | 908 |
| 15961 | Vintondale | 849 |
| 15949 | Robinson | 683 |
| 15920 | Armagh | 573 |
| 15754 | Lucernemines | 532 |
| 15716 | Black Lick | 434 |
| 15957 | Strongstown | 396 |
| 15739 | Ernest | 381 |
| 15750 | Josephine | 315 |
| 15720 | Brush Valley | 299 |
| 15745 | Heilwood | 234 |
| 15727 | Clune | 231 |
| 15731 | Coral | 220 |
| 15734 | Dixonville | 213 |
| 15710 | Alverda | 206 |
| 16246 | Plumville | 184 |
| 15713 | Aultman | 180 |
| 15746 | Hillsdale | 144 |
| 15761 | Mentcle | 141 |
| 15756 | McIntyre | 140 |
| 15929 | Dilltown | 128 |
| 15712 | Arcadia | 97 |
| 16211 | Beyer | 85 |
| 15741 | Gipsy | 64 |
| 15752 | Kent | 61 |
| 15783 | West Lebanon | 49 |
| 15777 | Starford | 23 |
| 15763 | Northpoint | 17 |
| 15723 | Chambersville | 15 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 46 ZCTAs in Indiana County, Pennsylvania (US Census).