ZIP Code 98855

98855 is one of Washington's ZIP codes, delivering to addresses in Tonasket, Okanogan County.

City: Tonasket
County: Okanogan County
State: Washington
Prefix: 988xx

Where this code sits

98855 is part of the 988xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Tonasket.

Tonasket Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98855 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 98855

The ZIP codes whose reference points sit closest to 98855.
ZIP code	Distance	Delivers to
ZIP code 98844	15 mi	Oroville, WA
ZIP code 98827	15 mi	Loomis, WA
ZIP code 98849	18 mi	Riverside, WA
ZIP code 98819	20 mi	Conconully, WA
ZIP code 98859	22 mi	Wauconda, WA
ZIP code 98841	22 mi	Omak, WA
ZIP code 98840	27 mi	Okanogan, WA
ZIP code 99166	32 mi	Republic, 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 98855, plotted from its record coordinates.

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

Scope ZIP code 98855. 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.