Lake Los Angeles, CA has a population of 11,609 and is the 3,511th largest city in the United States. The population density is 1,192 per sq mi which is 413% higher than the California average and 1215% higher than the national average. The median age in Lake Los Angeles is 34 which is approximately 4% lower than the California average of 36. In Lake Los Angeles, 50% of the population over 15 years of age are married, 69% speak English and 30% speak Spanish. 70% of Lake Los Angeles residents were born in California, 12% were born out of state, 0% were born outside of the United States and 17% were foreign born.