ZIP Code 98923

98923 is one of Washington's ZIP codes, delivering to addresses in Cowiche, Yakima County.

City: Cowiche
County: Yakima County
State: Washington
Prefix: 989xx

Where this code sits

98923 is part of the 989xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cowiche.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98923 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 98923

The ZIP codes whose reference points sit closest to 98923.
ZIP code	Distance	Delivers to
ZIP code 98947	3.2 mi	Tieton, WA
ZIP code 98908	3.4 mi	Yakima, WA
ZIP code 98904	7.1 mi	Yakima, WA
ZIP code 98907	7.2 mi	Yakima, WA
ZIP code 98942	8.3 mi	Selah, WA
ZIP code 98903	8.5 mi	Yakima, WA
ZIP code 98902	10 mi	Yakima, WA
ZIP code 98901	11 mi	Yakima, 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 98923, plotted from its record coordinates.

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

Scope ZIP code 98923. 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.