ZIP Code 98231

98231 is one of Washington's ZIP codes, delivering to addresses in Blaine, Whatcom County.

City: Blaine
County: Whatcom County
State: Washington
Prefix: 982xx

Where this code sits

98231 is part of the 982xx range, the group of codes handled by one mail processing centre. Blaine is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Blaine page.

Blaine Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98231 delivers to without sharing its boundary.

ZIP codes nearest 98231

The ZIP codes whose reference points sit closest to 98231.
ZIP code	Distance	Delivers to
ZIP code 98230	2.2 mi	Blaine, WA
ZIP code 98240	6.9 mi	Custer, WA
ZIP code 98248	11 mi	Ferndale, WA
ZIP code 98264	14 mi	Lynden, WA
ZIP code 98281	14 mi	Point Roberts, WA
ZIP code 98226	19 mi	Bellingham, WA
ZIP code 98262	20 mi	Lummi Island, WA
ZIP code 98247	20 mi	Everson, WA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 98231, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 98231. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.