Del Rio, CA has a population of 1,577 and is the 12,404th largest city in the United States. The population density is 757 per sq mi which is 226% higher than the California average and 736% higher than the national average. The median age in Del Rio is 50 which is approximately 38% higher than the California average of 36. In Del Rio, 86% of the population over 15 years of age are married, 63% speak English and 8% speak Spanish. 43% of Del Rio residents were born in California, 28% were born out of state, 0% were born outside of the United States and 29% were foreign born.