Mooresville, IN has a population of 9,553 and is the 4,074th largest city in the United States. The population density is 1,486 per sq mi which is 728% higher than the Indiana average and 1540% higher than the national average. The median age in Mooresville is 42 which is approximately 11% higher than the Indiana average of 37. In Mooresville, 59% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 80% of Mooresville residents were born in Indiana, 18% were born out of state, 0% were born outside of the United States and 1% were foreign born.