Applegate is an unincorporated community in Placer County, California. It is 7.25 mi south-southwest of Colfax, and 9.3 mi northeast of Auburn. The city's msl elevation is 2,005 ft. Its ZIP code is 95703 and its area code 530. Applegate was originally settled in 1849 by Lisbon Applegate, who came to California with his son, George, from Missouri.