Jamul /hɑːˈmuːl/ is a census-designated place (CDP) in San Diego County, California. Jamul had a population of 6,163 at the 2010 census. According to the United States Census Bureau Jamul is located at 32°43′36″N 116°52′56″W. According to the United States Census Bureau, the Jamul census-designated place (CDP) has a total area of 16.8 square miles (44 km2). 16.6 square miles (43 km2) of it is land and 0.3 square miles (0.78 km2) of it (1.49%) is water.