In which county is ZIP code 99143 located?

ZIP 99143 is listed under Whitman, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 99143: Lacrosse, WA

ZIP: 99143

County: Whitman

Coordinates: 46.77170, -117.77030

ZIP Type: Standard

Time Zone: Pacific Time (PT)

Get a reliable snapshot of the Lacrosse, WA postal area 99143. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Lacrosse
ZIP Code	99143
County	Whitman
State	WA
Latitude / Longitude	46.77170, -117.77030
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 99143 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 99143 is commonly represented around 46.77170, -117.77030. These coordinates help identify the general area within Whitman, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99143 for mail delivery and general location reference in Whitman, WA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Lacrosse within WA.

Frequently Asked Questions

What is the primary city for ZIP code 99143?

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

In which county is 99143 located?

ZIP code 99143 is situated within Whitman, WA.

What are the coordinates for 99143?

The approximate center point is 46.77170 (Latitude) and -117.77030 (Longitude).

Is ZIP code 99143 active?

This page lists ZIP 99143 as Listed based on the latest refresh date shown above.

Does ZIP 99143 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