Bieber (formerly, Chalk Ford) is a census-designated place (CDP) in Lassen County, California. It is located on the Pit River 55 miles (89 km) north-northwest of Susanville, at an elevation of 4124 feet (1257 m). Its population was 312 at the 2010 census. The ZIP Code is 96009. The community is inside area code 530.