South Dos Palos is a census-designated place in Merced County, California, United States. South Dos Palos is located 2mi southwest of Dos Palos, at an elevation of 118 feet . The population was 1,620 at the 2010 census, up from 1,385 at the 2000 census.GeographySouth Dos Palos is located at.According to the United States Census Bureau, the CDP has a total area of 1.5sqmi, all of it land.HistoryThe South Dos Palos post office opened in 1906.Demographics2010The 2010 United States Census reported that South Dos Palos had a population of 1,620. The population density was 1,055.6 people per square mile (407.6/kmĀ²). The racial makeup of South Dos Palos was 809 (49.9%) White, 135 (8.3%) African American, 21 (1.3%) Native American, 36 (2.2%) Asian, 10 (0.6%) Pacific Islander, 552 (34.1%) from other races, and 57 (3.5%) from two or more races. Hispanic or Latino of any race were 1,262 persons (77.9%).