ZIP Code 98237

98237 is one of Washington's ZIP codes, delivering to addresses in Concrete, Skagit County.

City: Concrete
County: Skagit County
State: Washington
Prefix: 982xx

Where this code sits

98237 is part of the 982xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Concrete.

Concrete Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98237 delivers to without sharing its boundary.

ZIP codes nearest 98237

The ZIP codes whose reference points sit closest to 98237.
ZIP code	Distance	Delivers to
ZIP code 98283	6.5 mi	Rockport, WA
ZIP code 98255	15 mi	Hamilton, WA
ZIP code 98267	17 mi	Marblemount, WA
ZIP code 98263	18 mi	Lyman, WA
ZIP code 98241	20 mi	Darrington, WA
ZIP code 98274	25 mi	Mount Vernon, WA
ZIP code 98273	26 mi	Mount Vernon, WA
ZIP code 98284	26 mi	Sedro Woolley, 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 98237, plotted from its record coordinates.

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

Scope ZIP code 98237. 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.