ZIP Code 99155

99155 is one of Washington's ZIP codes, delivering to addresses in Nespelem, Okanogan County.

City: Nespelem
County: Okanogan County
State: Washington
Prefix: 991xx

Where this code sits

99155 is part of the 991xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Nespelem.

Nespelem Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99155 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99155

The ZIP codes whose reference points sit closest to 99155.
ZIP code	Distance	Delivers to
ZIP code 99116	7.9 mi	Coulee Dam, WA
ZIP code 99124	10 mi	Elmer City, WA
ZIP code 99133	14 mi	Grand Coulee, WA
ZIP code 99123	16 mi	Electric City, WA
ZIP code 99140	18 mi	Keller, WA
ZIP code 98830	25 mi	Mansfield, WA
ZIP code 99103	27 mi	Almira, WA
ZIP code 98841	30 mi	Omak, 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 99155, plotted from its record coordinates.

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

Scope ZIP code 99155. 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.