Jamul, CA has a population of 5,640 and is the 5,988th largest city in the United States. The population density is 335 per sq mi which is 44% higher than the California average and 270% higher than the national average. The median age in Jamul is 50 which is approximately 39% higher than the California average of 36. In Jamul, 65% of the population over 15 years of age are married, 76% speak English and 13% speak Spanish. 60% of Jamul residents were born in California, 24% were born out of state, 0% were born outside of the United States and 16% were foreign born.