Calabasas, CA has a population of 24,091 and is the 1,808th largest city in the United States. The population density is 1,761 per sq mi which is 658% higher than the California average and 1844% higher than the national average. The median age in Calabasas is 43 which is approximately 19% higher than the California average of 36. In Calabasas, 60% of the population over 15 years of age are married, 73% speak English and 4% speak Spanish. 48% of Calabasas residents were born in California, 26% were born out of state, 1% were born outside of the United States and 25% were foreign born.