ZIP Code 99017

99017 is one of Washington's ZIP codes, delivering to addresses in Lamont, Whitman County.

City: Lamont
County: Whitman County
State: Washington
Prefix: 990xx

Where this code sits

99017 is part of the 990xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lamont.

Lamont Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99017 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99017

The ZIP codes whose reference points sit closest to 99017.
ZIP code	Distance	Delivers to
ZIP code 99032	11 mi	Sprague, WA
ZIP code 99171	16 mi	Saint John, WA
ZIP code 99125	19 mi	Endicott, WA
ZIP code 99149	19 mi	Malden, WA
ZIP code 99170	22 mi	Rosalia, WA
ZIP code 99176	23 mi	Thornton, WA
ZIP code 99008	24 mi	Edwall, WA
ZIP code 99169	25 mi	Ritzville, 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 99017, plotted from its record coordinates.

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

Scope ZIP code 99017. 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.