South Amana, IA has a population of 105 and is the 26,776th largest city in the United States. The population density is 76 per sq mi which is 39% higher than the Iowa average and 16% lower than the national average. The median age in South Amana is 57 which is approximately 51% higher than the Iowa average of 38. In South Amana, 44% of the population over 15 years of age are married, 93% speak English and 0% speak Spanish. 93% of South Amana residents were born in Iowa, 7% were born out of state, 0% were born outside of the United States and 0% were foreign born.