ZIP Code 98823

98823 is one of Washington's ZIP codes, delivering to addresses in Ephrata, Grant County.

City: Ephrata
County: Grant County
State: Washington
Prefix: 988xx

Where this code sits

98823 is part of the 988xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Ephrata.

Ephrata Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98823 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 98823

The ZIP codes whose reference points sit closest to 98823.
ZIP code	Distance	Delivers to
ZIP code 98851	7.6 mi	Soap Lake, WA
ZIP code 98837	15 mi	Moses Lake, WA
ZIP code 98848	16 mi	Quincy, WA
ZIP code 98853	16 mi	Stratford, WA
ZIP code 98845	20 mi	Palisades, WA
ZIP code 98824	21 mi	George, WA
ZIP code 98860	21 mi	Wilson Creek, WA
ZIP code 98832	22 mi	Marlin, 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 98823, plotted from its record coordinates.

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

Scope ZIP code 98823. 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.