Downey, CA has a population of 113,223 and is the 249th largest city in the United States. The population density is 9,125 per sq mi which is 3827% higher than the California average and 9972% higher than the national average. The median age in Downey is 34 which is approximately 6% lower than the California average of 36. In Downey, 50% of the population over 15 years of age are married, 31% speak English and 61% speak Spanish. 59% of Downey residents were born in California, 6% were born out of state, 1% were born outside of the United States and 34% were foreign born.