Defiance, Ohio

1 ZIP code · Eastern time

ZIP codes (largest first)

43512 · 28,022
Population17,276
StateOhio
CountyDefiance County
Time zoneEastern
Land area12.87 sq mi

Area codes in this area

419567

These are the area codes that most often serve Defiance (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Find the ZIP+4 for an address in Defiance

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.