Whatcom County ZIP Codes
Washington, United States · 18 codes
Whatcom County in Washington has 18 ZIP codes, from 98220 to 98295, serving 18 places.
ZIP codes in Whatcom
Frequently asked questions
What is the ZIP code of Whatcom?
Whatcom has 18 ZIP codes, from 98220 to 98295. The table lists the places each one serves.
How many places are listed in Whatcom 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.