In which county is ZIP code 99110 located?

ZIP 99110 is listed under Stevens, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 99110: Clayton, WA

ZIP: 99110

County: Stevens

Coordinates: 48.00710, -117.55790

ZIP Type: Standard

Time Zone: Pacific Time (PT)

This profile provides an in-depth look at ZIP code 99110, serving Clayton in WA. It lies in Stevens and supports delivery, planning, and address verification.

Primary City	Clayton
ZIP Code	99110
County	Stevens
State	WA
Latitude / Longitude	48.00710, -117.55790
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 99110 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 99110 are listed as 48.00710 / -117.55790, useful for GPS and service checks in and around Clayton, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99110 for mail delivery and general location reference in Stevens, WA.

This ZIP may extend beyond the city core into nearby communities within Stevens.

Related ZIP Codes (Nearby)

Explore other postal codes near Clayton within WA.

Frequently Asked Questions

What is the primary city for ZIP code 99110?

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

In which county is 99110 located?

ZIP code 99110 is situated within Stevens, WA.

What are the coordinates for 99110?

The approximate center point is 48.00710 (Latitude) and -117.55790 (Longitude).

Is ZIP code 99110 active?

This page lists ZIP 99110 as Listed based on the latest refresh date shown above.

Does ZIP 99110 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