Quincy is a city in Grant County, Washington, United States. It is situated east of the Columbia River on State Route 28 and north of Interstate 90. The population was 7,543 at the 2020 census. Quincy is one of the closest cities to The Gorge Amphitheatre.
Historic Reiman-Simmons House at the Quincy Valley Museum
Fishing, hiking and bird-watching occur at nearby Quincy Lake, a remnant of the temporary Pleistocene lakes that were created by flood waters from glacial Lake Missoula.
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