Grand Coulee is a city in Grant County, Washington, United States. The population was 972 at the 2020 census.
Main Street, Grand Coulee, WA
Aerial view from the south with Grand Coulee located centrally, Electric City to the left and Coulee Dam to the right.
Grant County is a county located in the U.S. state of Washington. As of the 2020 census, the population was 99,123. The county seat is Ephrata, and the largest city is Moses Lake. The county was formed out of Douglas County in February 1909 and is named for U.S. President Ulysses S. Grant.
Grant County Courthouse