In which county is ZIP code 99111 located?

ZIP 99111 is listed under Whitman, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 99111: Colfax, WA

ZIP: 99111

County: Whitman

Coordinates: 46.88000, -117.36700

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Get a reliable snapshot of the Colfax, WA postal area 99111. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Colfax
ZIP Code	99111
County	Whitman
State	WA
Latitude / Longitude	46.88000, -117.36700
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 99111 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 99111 are listed as 46.88000 / -117.36700, useful for GPS and service checks in and around Colfax, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99111 for mail delivery and general location reference in Whitman, WA.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Colfax.

Related ZIP Codes (Nearby)

Explore other postal codes near Colfax within WA.

Frequently Asked Questions

What is the primary city for ZIP code 99111?

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

In which county is 99111 located?

ZIP code 99111 is situated within Whitman, WA.

What are the coordinates for 99111?

The approximate center point is 46.88000 (Latitude) and -117.36700 (Longitude).

Is ZIP code 99111 active?

This page lists ZIP 99111 as Listed based on the latest refresh date shown above.

Does ZIP 99111 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