Home > WA > Douglas County > Coulee City > Zip 99115

Zip Code 99115 — Coulee City, WA

99115 is a ZIP Code associated with Coulee City, WA, located within Douglas. The postal region supports an estimated population of 1,369 residents across Data Pending housing units, with a population density of 1.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (47.673260, -119.389650)

Data MetricLocal Statistic
Postal / Zip Code99115
Primary CityCoulee City
State / ProvinceWA
CountyDouglas
Total Population1,369
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1.3 people/sq mi
TimezoneAmerica/Los_Angeles

How 99115 Compares

MetricZIP 99115Douglas CountyWA State Average
Population1,36945,8467,816,021
Median IncomeData PendingN/AN/A
Population Density1.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 99135Hartline13.7 mi395N/A
Zip 98830Mansfield16.0 mi557N/A
Zip 98853Stratford16.5 mi6N/A
Zip 98851Soap Lake17.6 mi4,437N/A
Zip 98860Wilson Creek18.8 mi277N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →