Malibu, CA has a population of 12,853 and is the 3,236th largest city in the United States. The population density is 649 per sq mi which is 179% higher than the California average and 617% higher than the national average. The median age in Malibu is 52 which is approximately 45% higher than the California average of 36. In Malibu, 59% of the population over 15 years of age are married, 85% speak English and 4% speak Spanish. 46% of Malibu residents were born in California, 36% were born out of state, 1% were born outside of the United States and 17% were foreign born.