Carson, IA has a population of 838 and is the 16,289th largest city in the United States. The population density is 1,182 per sq mi which is 2064% higher than the Iowa average and 1205% higher than the national average. The median age in Carson is 39 which is approximately 3% higher than the Iowa average of 38. In Carson, 63% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 63% of Carson residents were born in Iowa, 37% were born out of state, 1% were born outside of the United States and 0% were foreign born.