ZIP Code 99179

99179 is one of Washington's ZIP codes, delivering to addresses in Uniontown, Whitman County.

City: Uniontown
County: Whitman County
State: Washington
Prefix: 991xx

Where this code sits

99179 is part of the 991xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Uniontown.

Uniontown Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99179 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99179

The ZIP codes whose reference points sit closest to 99179.
ZIP code	Distance	Delivers to
ZIP code 99113	5.8 mi	Colton, WA
ZIP code 83832	8.3 mi	Genesee, ID
ZIP code 99403	9.2 mi	Clarkston, WA
ZIP code 99164	15 mi	Pullman, WA
ZIP code 83844	15 mi	Moscow, ID
ZIP code 83843	15 mi	Moscow, ID
ZIP code 99163	15 mi	Pullman, WA
ZIP code 83501	16 mi	Lewiston, ID

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 99179, plotted from its record coordinates.

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

Scope ZIP code 99179. 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.