El Reno, OK has a population of 18,170 and is the 2,394th largest city in the United States. The population density is 229 per sq mi which is 320% higher than the Oklahoma average and 153% higher than the national average. The median age in El Reno is 35 which is approximately 4% lower than the Oklahoma average of 36. In El Reno, 53% of the population over 15 years of age are married, 86% speak English and 11% speak Spanish. 63% of El Reno residents were born in Oklahoma, 31% were born out of state, 0% were born outside of the United States and 6% were foreign born.