Rockcastle County ZIP Codes
Kentucky, United States · 6 codes
Rockcastle County in Kentucky has 6 ZIP codes, from 40409 to 40492, serving 6 places.
ZIP codes in Rockcastle
Frequently asked questions
What is the ZIP code of Rockcastle?
Rockcastle has 6 ZIP codes, from 40409 to 40492. The table lists the places each one serves.
How many places are listed in Rockcastle County?
6 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.