ZIP Code 99180

99180 is one of Washington's ZIP codes, delivering to addresses in Usk, Pend Oreille County.

City: Usk
County: Pend Oreille County
State: Washington
Prefix: 991xx

Where this code sits

99180 is part of the 991xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Usk.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99180 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99180

The ZIP codes whose reference points sit closest to 99180.
ZIP code	Distance	Delivers to
ZIP code 99119	6.6 mi	Cusick, WA
ZIP code 99156	12 mi	Newport, WA
ZIP code 83822	19 mi	Oldtown, ID
ZIP code 99009	19 mi	Elk, WA
ZIP code 99148	21 mi	Loon Lake, WA
ZIP code 83856	21 mi	Priest River, ID
ZIP code 99109	21 mi	Chewelah, WA
ZIP code 99110	23 mi	Clayton, 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 99180, plotted from its record coordinates.

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

Scope ZIP code 99180. 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.