In which county is ZIP code 98645 located?

ZIP 98645 is listed under Cowlitz, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 98645: Silverlake, WA

ZIP: 98645

County: Cowlitz

Coordinates: 46.31630, -122.76490

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Explore detailed information for ZIP code 98645 in Silverlake, WA. We include verified county details for Cowlitz plus key geographic references used for mapping and logistics.

Primary City	Silverlake
ZIP Code	98645
County	Cowlitz
State	WA
Latitude / Longitude	46.31630, -122.76490
ZIP Type	Standard
Time Zone	Pacific Time (PT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 98645 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 98645 is approximately 46.31630 (latitude) and -122.76490 (longitude). This location sits within Cowlitz, contributing to regional planning across WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 98645 for mail delivery and general location reference in Cowlitz, WA.

Some addresses near Silverlake may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Silverlake within WA.

Frequently Asked Questions

What is the primary city for ZIP code 98645?

The primary city for this ZIP code is Silverlake, located in WA.

In which county is 98645 located?

ZIP code 98645 is situated within Cowlitz, WA.

What are the coordinates for 98645?

The approximate center point is 46.31630 (Latitude) and -122.76490 (Longitude).

Is ZIP code 98645 active?

This page lists ZIP 98645 as Listed based on the latest refresh date shown above.

Does ZIP 98645 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08