Warren County ZIP Codes
Ohio, United States · 12 codes
Warren County in Ohio has 12 ZIP codes, from 45005 to 45162, serving 12 places.
ZIP codes in Warren
Frequently asked questions
What is the ZIP code of Warren?
Warren has 12 ZIP codes, from 45005 to 45162. The table lists the places each one serves.
How many places are listed in Warren County?
12 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.