Washington is a census-designated place located in Nevada County, California. Washington is located on the banks of the South Yuba River and has a population of approximately two hundred people. There is a hotel/bar and restaurant, grocery store, a one-room schoolhouse that has educated students continuously for one hundred years, and two trailer park campgrounds. The elevation is 2,612 feet (796 m). The population was 185 at the 2010 census. According to the 2020 census, the population was 137 with a median age of 61.7.