Hardin County ZIP Codes
Kentucky, United States · 15 codes
Hardin County in Kentucky has 15 ZIP codes, from 40121 to 42788, serving 15 places.
ZIP codes in Hardin
Frequently asked questions
What is the ZIP code of Hardin?
Hardin has 15 ZIP codes, from 40121 to 42788. The table lists the places each one serves.
How many places are listed in Hardin County?
15 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.