ZIP codes in Mahoning County
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- 44401 Berlin CenterMahoning County
- 44405 CampbellMahoning County
- 44406 CanfieldMahoning County
- 44429 Lake MiltonMahoning County
- 44436 LowellvilleMahoning County
- 44442 New MiddletownMahoning County
- 44443 New SpringfieldMahoning County
- 44451 North JacksonMahoning County
- 44452 North LimaMahoning County
- 44454 PetersburgMahoning County
- 44471 StruthersMahoning County
- 44490 LeetoniaMahoning County
- 44502 YoungstownMahoning County
- 44503 YoungstownMahoning County
- 44504 YoungstownMahoning County
- 44505 YoungstownMahoning County
- 44506 YoungstownMahoning County
- 44507 YoungstownMahoning County
- 44509 YoungstownMahoning County
- 44510 YoungstownMahoning County
- 44511 YoungstownMahoning County
- 44512 YoungstownMahoning County
- 44514 YoungstownMahoning County
- 44515 YoungstownMahoning County
- 44555 YoungstownMahoning County
- 44609 BeloitMahoning County
- 44619 DamascusMahoning County
- 44672 SebringMahoning County