ZIP Code 98555

98555 is one of Washington's ZIP codes, delivering to addresses in Lilliwaup, Mason County.

City: Lilliwaup
County: Mason County
State: Washington
Prefix: 985xx

Where this code sits

98555 is part of the 985xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lilliwaup.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98555 delivers to without sharing its boundary.

ZIP codes nearest 98555

The ZIP codes whose reference points sit closest to 98555.
ZIP code	Distance	Delivers to
ZIP code 98588	5.1 mi	Tahuya, WA
ZIP code 98548	8.1 mi	Hoodsport, WA
ZIP code 98528	8.4 mi	Belfair, WA
ZIP code 98380	11 mi	Seabeck, WA
ZIP code 98592	12 mi	Union, WA
ZIP code 98320	13 mi	Brinnon, WA
ZIP code 98524	14 mi	Allyn, WA
ZIP code 98546	15 mi	Grapeview, 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 98555, plotted from its record coordinates.

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

Scope ZIP code 98555. 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.