ZIP Code 98840

98840 is one of Washington's ZIP codes, delivering to addresses in Okanogan, Okanogan County.

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

Where this code sits

98840 is part of the 988xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Okanogan.

Okanogan Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98840 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 98840

The ZIP codes whose reference points sit closest to 98840.
ZIP code	Distance	Delivers to
ZIP code 98841	5.6 mi	Omak, WA
ZIP code 98849	9.5 mi	Riverside, WA
ZIP code 98829	9.9 mi	Malott, WA
ZIP code 98819	15 mi	Conconully, WA
ZIP code 98812	18 mi	Brewster, WA
ZIP code 98813	24 mi	Bridgeport, WA
ZIP code 98814	24 mi	Carlton, WA
ZIP code 98856	24 mi	Twisp, 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 98840, plotted from its record coordinates.

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

Scope ZIP code 98840. 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.