Corydon, IN has a population of 3,125 and is the 8,598th largest city in the United States. The population density is 1,893 per sq mi which is 955% higher than the Indiana average and 1990% higher than the national average. The median age in Corydon is 42 which is approximately 11% higher than the Indiana average of 37. In Corydon, 50% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 52% of Corydon residents were born in Indiana, 48% were born out of state, 0% were born outside of the United States and 0% were foreign born.