28 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 44512 | Youngstown | 33,018 |
| 44515 | Youngstown | 27,740 |
| 44514 | Youngstown | 23,632 |
| 44406 | Canfield | 22,297 |
| 44511 | Youngstown | 18,919 |
| 44505 | Youngstown | 16,449 |
| 44509 | Youngstown | 10,775 |
| 44471 | Struthers | 10,296 |
| 44502 | Youngstown | 9,369 |
| 44405 | Campbell | 7,834 |
| 44504 | Youngstown | 5,185 |
| 44672 | Sebring | 4,741 |
| 44507 | Youngstown | 4,402 |
| 44442 | New Middletown | 3,856 |
| 44609 | Beloit | 3,645 |
| 44436 | Lowellville | 3,121 |
| 44451 | North Jackson | 2,886 |
| 44452 | North Lima | 2,661 |
| 44401 | Berlin Center | 2,565 |
| 44429 | Lake Milton | 2,361 |
| 44506 | Youngstown | 2,214 |
| 44510 | Youngstown | 2,091 |
| 44443 | New Springfield | 1,950 |
| 44449 | North Benton | 1,362 |
| 44503 | Youngstown | 970 |
| 44454 | Petersburg | 806 |
| 44555 | Youngstown | 170 |
| 44619 | Damascus | 138 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 28 ZCTAs in Mahoning County, Ohio (US Census).