Allen County, Ohio

13 ZIP codes · 402.55 sq mi of land · FIPS 39003

Population101,348
StateOhio
FIPS code39003
Time zoneEastern
Land area402.55 sq mi
Center (lat, long)40.7716, -84.1061

Area codes in this area

326419567937

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

Cities and towns (largest first)

Lima · 35,010BeaverdamGomerBlufftonCairoDelphosHarrodLafayetteSpencerville

ZIP codes in Allen County

45801 Lima45804 Lima45805 Lima45806 Lima45807 Lima45808 Beaverdam45809 Gomer45817 Bluffton45820 Cairo45833 Delphos45850 Harrod45854 Lafayette45887 Spencerville

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