Los Angeles, CA has a population of 3,918,872 and is the 2nd largest city in the United States. The population density is 8,362 per sq mi which is 3498% higher than the California average and 9129% higher than the national average. The median age in Los Angeles is 35 which is approximately 3% lower than the California average of 36. In Los Angeles, 44% of the population over 15 years of age are married, 40% speak English and 43% speak Spanish. 46% of Los Angeles residents were born in California, 15% were born out of state, 1% were born outside of the United States and 38% were foreign born.