ZIP Code 99163

99163 is one of Washington's ZIP codes, delivering to addresses in Pullman, Whitman County.

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

Where this code sits

99163 is part of the 991xx range, the group of codes handled by one mail processing centre. Pullman is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Pullman page.

Pullman Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99163 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99163

The ZIP codes whose reference points sit closest to 99163.
ZIP code	Distance	Delivers to
ZIP code 99164	0.4 mi	Pullman, WA
ZIP code 99102	5.4 mi	Albion, WA
ZIP code 83844	8.2 mi	Moscow, ID
ZIP code 83843	8.7 mi	Moscow, ID
ZIP code 99113	10 mi	Colton, WA
ZIP code 99161	13 mi	Palouse, WA
ZIP code 83872	13 mi	Viola, ID
ZIP code 99111	14 mi	Colfax, 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 99163, plotted from its record coordinates.

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

Scope ZIP code 99163. 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.