ZIP Code 98556

98556 is one of Washington's ZIP codes, delivering to addresses in Littlerock, Thurston County.

City: Littlerock
County: Thurston County
State: Washington
Prefix: 985xx

Where this code sits

98556 is part of the 985xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Littlerock.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98556 delivers to without sharing its boundary.

ZIP codes nearest 98556

The ZIP codes whose reference points sit closest to 98556.
ZIP code	Distance	Delivers to
ZIP code 98512	3.3 mi	Olympia, WA
ZIP code 98511	4.1 mi	Tumwater, WA
ZIP code 98579	5.8 mi	Rochester, WA
ZIP code 98589	8.3 mi	Tenino, WA
ZIP code 98530	9.9 mi	Bucoda, WA
ZIP code 98501	10 mi	Olympia, WA
ZIP code 98504	11 mi	Olympia, WA
ZIP code 98507	11 mi	Olympia, 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 98556, plotted from its record coordinates.

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

Scope ZIP code 98556. 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.