Denver, IN has a population of 516 and is the 19,338th largest city in the United States. The population density is 2,216 per sq mi which is 1134% higher than the Indiana average and 2345% higher than the national average. The median age in Denver is 40 which is approximately 6% higher than the Indiana average of 37. In Denver, 53% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 83% of Denver residents were born in Indiana, 17% were born out of state, 0% were born outside of the United States and 0% were foreign born.