Washington County ZIP Codes
Minnesota, United States · 18 codes
Washington County in Minnesota has 18 ZIP codes, from 55001 to 55129, serving 18 places.
ZIP codes in Washington
Frequently asked questions
What is the ZIP code of Washington?
Washington has 18 ZIP codes, from 55001 to 55129. The table lists the places each one serves.
How many places are listed in Washington County?
18 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.