San Miguel is a census-designated place (CDP) in San Luis Obispo County, California, United States. As of the 2010 census, the population was 2,336, up from 1,427 at the 2000 census.GeographyAccording to the United States Census Bureau, the CDP has a total area of 1.7 square miles (4.4 km²), all of it land.Demographics2010The 2010 United States Census reported that San Miguel had a population of 2,336. The population density was 1,369.9 people per square mile (528.9/km²). The racial makeup of San Miguel was 1,638 (70.1%) White, 65 (2.8%) African American, 58 (2.5%) Native American, 19 (0.8%) Asian, 1 (0.0%) Pacific Islander, 474 (20.3%) from other races, and 81 (3.5%) from two or more races. Hispanic or Latino of any race were 1,196 persons (51.2%).The Census reported that 2,324 people (99.5% of the population) lived in households, 12 (0.5%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.