ZIP Code 99333

99333 is one of Washington's ZIP codes, delivering to addresses in Hooper, Whitman County.

City: Hooper
County: Whitman County
State: Washington
Prefix: 993xx

Where this code sits

99333 is part of the 993xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Hooper.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99333 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99333

The ZIP codes whose reference points sit closest to 99333.
ZIP code	Distance	Delivers to
ZIP code 99105	7.3 mi	Benge, WA
ZIP code 99371	8.0 mi	Washtucna, WA
ZIP code 99136	11 mi	Hay, WA
ZIP code 99359	17 mi	Starbuck, WA
ZIP code 99143	18 mi	Lacrosse, WA
ZIP code 99335	19 mi	Kahlotus, WA
ZIP code 99125	24 mi	Endicott, WA
ZIP code 99169	29 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 99333, plotted from its record coordinates.

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

Scope ZIP code 99333. 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.