Adams County ZIP Codes
Washington, United States · 5 codes
Adams County in Washington has 5 ZIP codes, from 99105 to 99371, serving 5 places.
ZIP codes in Adams
Frequently asked questions
What is the ZIP code of Adams?
Adams has 5 ZIP codes, from 99105 to 99371. The table lists the places each one serves.
How many places are listed in Adams County?
5 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.