Chowchilla, CA has a population of 18,195 and is the 2,391st largest city in the United States. The population density is 1,634 per sq mi which is 603% higher than the California average and 1703% higher than the national average. The median age in Chowchilla is 35 which is approximately 2% lower than the California average of 36. In Chowchilla, 41% of the population over 15 years of age are married, 60% speak English and 35% speak Spanish. 70% of Chowchilla residents were born in California, 14% were born out of state, 0% were born outside of the United States and 16% were foreign born.