Washington County ZIP Codes
Kentucky, United States · 4 codes
Washington County in Kentucky has 4 ZIP codes, from 40040 to 40078, serving 4 places.
ZIP codes in Washington
Frequently asked questions
What is the ZIP code of Washington?
Washington has 4 ZIP codes, from 40040 to 40078. The table lists the places each one serves.
How many places are listed in Washington County?
4 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.