Allen County ZIP Codes
Ohio, United States · 13 codes
Allen County in Ohio has 13 ZIP codes, from 45801 to 45887, serving 13 places.
ZIP codes in Allen
Frequently asked questions
What is the ZIP code of Allen?
Allen has 13 ZIP codes, from 45801 to 45887. The table lists the places each one serves.
How many places are listed in Allen County?
13 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.