ZIP Code 98645

98645 is one of Washington's ZIP codes, delivering to addresses in Silverlake, Cowlitz County.

City: Silverlake
County: Cowlitz County
State: Washington
Prefix: 986xx

Where this code sits

98645 is part of the 986xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Silverlake.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 98645 delivers to without sharing its boundary.

ZIP codes nearest 98645

The ZIP codes whose reference points sit closest to 98645.
ZIP code	Distance	Delivers to
ZIP code 98649	5.8 mi	Toutle, WA
ZIP code 98611	7.6 mi	Castle Rock, WA
ZIP code 98591	9.0 mi	Toledo, WA
ZIP code 98593	11 mi	Vader, WA
ZIP code 98626	13 mi	Kelso, WA
ZIP code 98581	14 mi	Ryderwood, WA
ZIP code 98596	14 mi	Winlock, WA
ZIP code 98632	15 mi	Longview, 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 98645, plotted from its record coordinates.

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

Scope ZIP code 98645. 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.