Cobb is a census-designated place (CDP) in Lake County, California, United States. Cobb is located 1 mile (1.6 km) northwest of Whispering Pines, at an elevation of 2631 feet (802 m). The population was 1,778 at the 2010 census, up from 1,638 at the 2000 census.
Cobb is located on State highway 175 at an elevation of 2,600 ft (790 m).
According to the United States Census Bureau, the CDP has a total area of 5.0 square miles (12.9 km²), of which, 99.83% of it is land and 0.17% is water. Cobb borders to the SE Napa County, Sonoma to the West, Mendocino to the N and Colusa to the E. The zip code is 95426.