Centerville, IA has a population of 5,404 and is the 6,134th largest city in the United States. The population density is 1,121 per sq mi which is 1952% higher than the Iowa average and 1137% higher than the national average. The median age in Centerville is 44 which is approximately 15% higher than the Iowa average of 38. In Centerville, 59% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 72% of Centerville residents were born in Iowa, 26% were born out of state, 1% were born outside of the United States and 2% were foreign born.