Conesville, IA has a population of 617 and is the 18,269th largest city in the United States. The population density is 1,721 per sq mi which is 3050% higher than the Iowa average and 1799% higher than the national average. The median age in Conesville is 30 which is approximately 22% lower than the Iowa average of 38. In Conesville, 53% of the population over 15 years of age are married, 39% speak English and 59% speak Spanish. 51% of Conesville residents were born in Iowa, 13% were born out of state, 8% were born outside of the United States and 27% were foreign born.