Danville is an unincorporated community in Ferry County, Washington, United States. Danville is located on Washington State Route 21 near the Canadian border, 26 miles (42 km) north-northeast of Republic. Danville has a post office with ZIP code 99121. The population at the 2010 census was 34.
Danville was founded in 1899 and took its name from the Danville Mining Company.