Cerritos, CA has a population of 49,797 and is the 822nd largest city in the United States. The population density is 5,709 per sq mi which is 2357% higher than the California average and 6202% higher than the national average. The median age in Cerritos is 45 which is approximately 24% higher than the California average of 36. In Cerritos, 64% of the population over 15 years of age are married, 41% speak English and 8% speak Spanish. 42% of Cerritos residents were born in California, 12% were born out of state, 1% were born outside of the United States and 45% were foreign born.