ZIP Code 99125

99125 is one of Washington's ZIP codes, delivering to addresses in Endicott, Whitman County.

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

Where this code sits

99125 is part of the 991xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Endicott.

Endicott Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99125 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99125

The ZIP codes whose reference points sit closest to 99125.
ZIP code	Distance	Delivers to
ZIP code 99143	12 mi	Lacrosse, WA
ZIP code 99171	12 mi	Saint John, WA
ZIP code 99111	17 mi	Colfax, WA
ZIP code 99174	18 mi	Steptoe, WA
ZIP code 99017	19 mi	Lamont, WA
ZIP code 99136	20 mi	Hay, WA
ZIP code 99176	21 mi	Thornton, WA
ZIP code 99105	21 mi	Benge, 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 99125, plotted from its record coordinates.

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

Scope ZIP code 99125. 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.