In which county is ZIP code 99115 located?

ZIP 99115 is listed under Grant, WA.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 99115: Coulee City, WA

ZIP: 99115

County: Grant

Coordinates: 47.59660, -119.27580

ZIP Type: Standard

Time Zone: Pacific Time (PT)

This profile provides an in-depth look at ZIP code 99115, serving Coulee City in WA. It lies in Grant and supports delivery, planning, and address verification.

Primary City	Coulee City
ZIP Code	99115
County	Grant
State	WA
Latitude / Longitude	47.59660, -119.27580
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 99115 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 99115 are listed as 47.59660 / -119.27580, useful for GPS and service checks in and around Coulee City, WA.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 99115 for mail delivery and general location reference in Grant, WA.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Coulee City within WA.

Frequently Asked Questions

What is the primary city for ZIP code 99115?

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

In which county is 99115 located?

ZIP code 99115 is situated within Grant, WA.

What are the coordinates for 99115?

The approximate center point is 47.59660 (Latitude) and -119.27580 (Longitude).

Is ZIP code 99115 active?

This page lists ZIP 99115 as Listed based on the latest refresh date shown above.

Does ZIP 99115 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