Grizzly Flat (formerly, Grizzly Flats and Chickenmasee) is an unincorporated community in El Dorado County, California. It is located on the Southern Pacific Railroad 11 miles (18 km) southeast of Camino, at an elevation of 3868 feet (1179 m).
The name was given by miners who were surprised by a grizzly bear in 1850. A post office opened at Grizzly Flats in 1855.
As of 2000, there were 647 people residing in the area, with 346 males and 301 females. The population density was 70.5 people per square mile (27.2/km²). The average household size was 1.8 and the median age 44.1. The median income for a household was $40,526, with 28% of the population over 25 years of age having a college degree.