Indio, CA has a population of 85,401 and is the 394th largest city in the United States. The population density is 2,570 per sq mi which is 1006% higher than the California average and 2737% higher than the national average. The median age in Indio is 35 which is approximately 2% lower than the California average of 36. In Indio, 55% of the population over 15 years of age are married, 44% speak English and 53% speak Spanish. 57% of Indio residents were born in California, 15% were born out of state, 1% were born outside of the United States and 27% were foreign born.