Washington County ZIP Codes
Colorado, United States · 6 codes
Washington County in Colorado has 6 ZIP codes, from 80720 to 80812, serving 6 places.
ZIP codes in Washington
Frequently asked questions
What is the ZIP code of Washington?
Washington has 6 ZIP codes, from 80720 to 80812. The table lists the places each one serves.
How many places are listed in Washington 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.