In which county is ZIP code 98581 located?

ZIP 98581 is listed under Cowlitz, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 98581: Ryderwood, WA

ZIP: 98581

County: Cowlitz

Coordinates: 46.37520, -123.04310

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Get a reliable snapshot of the Ryderwood, WA postal area 98581. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Ryderwood
ZIP Code	98581
County	Cowlitz
State	WA
Latitude / Longitude	46.37520, -123.04310
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 98581 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 98581 are listed as 46.37520 / -123.04310, useful for GPS and service checks in and around Ryderwood, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 98581 for mail delivery and general location reference in Cowlitz, WA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Ryderwood within WA.

Frequently Asked Questions

What is the primary city for ZIP code 98581?

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

In which county is 98581 located?

ZIP code 98581 is situated within Cowlitz, WA.

What are the coordinates for 98581?

The approximate center point is 46.37520 (Latitude) and -123.04310 (Longitude).

Is ZIP code 98581 active?

This page lists ZIP 98581 as Listed based on the latest refresh date shown above.

Does ZIP 98581 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