Knox County ZIP Codes
Ohio, United States · 10 codes
Knox County in Ohio has 10 ZIP codes, from 43005 to 43050, serving 10 places.
ZIP codes in Knox
Frequently asked questions
What is the ZIP code of Knox?
Knox has 10 ZIP codes, from 43005 to 43050. The table lists the places each one serves.
How many places are listed in Knox County?
10 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.