28 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 44512 | Youngstown | 32,536 |
| 44515 | Youngstown | 27,690 |
| 44514 | Youngstown | 23,917 |
| 44406 | Canfield | 22,451 |
| 44511 | Youngstown | 18,909 |
| 44505 | Youngstown | 16,764 |
| 44509 | Youngstown | 10,562 |
| 44471 | Struthers | 10,295 |
| 44502 | Youngstown | 9,594 |
| 44405 | Campbell | 7,815 |
| 44504 | Youngstown | 5,191 |
| 44672 | Sebring | 4,634 |
| 44507 | Youngstown | 4,140 |
| 44609 | Beloit | 3,782 |
| 44442 | New Middletown | 3,762 |
| 44436 | Lowellville | 3,077 |
| 44451 | North Jackson | 2,892 |
| 44452 | North Lima | 2,602 |
| 44401 | Berlin Center | 2,526 |
| 44429 | Lake Milton | 2,313 |
| 44506 | Youngstown | 2,096 |
| 44510 | Youngstown | 2,027 |
| 44443 | New Springfield | 1,641 |
| 44449 | North Benton | 1,205 |
| 44503 | Youngstown | 938 |
| 44454 | Petersburg | 912 |
| 44619 | Damascus | 299 |
| 44555 | Youngstown | 169 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 28 ZCTAs in Mahoning County, Ohio (US Census).