Del City, OK has a population of 21,962 and is the 1,984th largest city in the United States. The population density is 2,921 per sq mi which is 5252% higher than the Oklahoma average and 3124% higher than the national average. The median age in Del City is 36 which is approximately 2% lower than the Oklahoma average of 36. In Del City, 53% of the population over 15 years of age are married, 93% speak English and 5% speak Spanish. 66% of Del City residents were born in Oklahoma, 28% were born out of state, 2% were born outside of the United States and 4% were foreign born.