Columbus, IN has a population of 46,474 and is the 889th largest city in the United States. The population density is 1,674 per sq mi which is 833% higher than the Indiana average and 1748% higher than the national average. The median age in Columbus is 36 which is approximately 4% lower than the Indiana average of 37. In Columbus, 58% of the population over 15 years of age are married, 86% speak English and 4% speak Spanish. 63% of Columbus residents were born in Indiana, 24% were born out of state, 0% were born outside of the United States and 13% were foreign born.