In which county is ZIP code 99138 located?

ZIP 99138 is listed under Ferry, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 99138: Inchelium, WA

ZIP: 99138

County: Ferry

Coordinates: 48.29240, -118.35520

ZIP Type: Standard

Time Zone: Pacific Time (PT)

This profile provides an in-depth look at ZIP code 99138, serving Inchelium in WA. It lies in Ferry and supports delivery, planning, and address verification.

Primary City	Inchelium
ZIP Code	99138
County	Ferry
State	WA
Latitude / Longitude	48.29240, -118.35520
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 99138 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 99138 are listed as 48.29240 / -118.35520, useful for GPS and service checks in and around Inchelium, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99138 for mail delivery and general location reference in Ferry, WA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Inchelium within WA.

Frequently Asked Questions

What is the primary city for ZIP code 99138?

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

In which county is 99138 located?

ZIP code 99138 is situated within Ferry, WA.

What are the coordinates for 99138?

The approximate center point is 48.29240 (Latitude) and -118.35520 (Longitude).

Is ZIP code 99138 active?

This page lists ZIP 99138 as Listed based on the latest refresh date shown above.

Does ZIP 99138 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