ZIP Code 99161

99161 is one of Washington's ZIP codes, delivering to addresses in Palouse, Whitman County.

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

Where this code sits

99161 is part of the 991xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Palouse.

Palouse Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99161 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99161

The ZIP codes whose reference points sit closest to 99161.
ZIP code	Distance	Delivers to
ZIP code 83872	6.3 mi	Viola, ID
ZIP code 99130	6.8 mi	Garfield, WA
ZIP code 83855	8.5 mi	Potlatch, ID
ZIP code 99102	11 mi	Albion, WA
ZIP code 83857	12 mi	Princeton, ID
ZIP code 99128	12 mi	Farmington, WA
ZIP code 99163	13 mi	Pullman, WA
ZIP code 99104	13 mi	Belmont, 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 99161, plotted from its record coordinates.

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

Scope ZIP code 99161. 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.