Hammonton, California
Hammonton is an unincorporated community in Yuba County, California. It is located south of Browns Valley, at an elevation of 131 feet.
A post office operated at Hammonton from 1906 to 1957. The original name was due to gold dredging which took place in the nearby Yuba Goldfields. The current name is in honor of W.P. Hammon, gold-dredging company official.