Chula Vista, CA has a population of 260,598 and is the 76th largest city in the United States. The population density is 5,251 per sq mi which is 2159% higher than the California average and 5695% higher than the national average. The median age in Chula Vista is 34 which is approximately 5% lower than the California average of 36. In Chula Vista, 56% of the population over 15 years of age are married, 42% speak English and 47% speak Spanish. 52% of Chula Vista residents were born in California, 14% were born out of state, 3% were born outside of the United States and 31% were foreign born.