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Grand Coulee, WA ZIP code

The ZIP code for Grand Coulee, Washington is 99133. It is in Douglas County.

Population in these ZIPs
1,115
Avg. median income
$68,900population-weighted
Typical home value
$248,700population-weighted
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ZIP codes within 10 miles

Grand Coulee, WA ZIP code list

Grand Coulee, WA ZIP codes
ZIP codePopulationMedian incomeTypical home value
991331,115$68,854$248,700

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Grand Coulee

Frequently asked questions

What is the ZIP code for Grand Coulee, WA?

The ZIP code for Grand Coulee, WA is 99133.

What county is Grand Coulee, Washington in?

Grand Coulee ZIP codes are in Douglas County.