Morning Sun, IA has a population of 906 and is the 15,746th largest city in the United States. The population density is 1,164 per sq mi which is 2030% higher than the Iowa average and 1185% higher than the national average. The median age in Morning Sun is 40 which is approximately 6% higher than the Iowa average of 38. In Morning Sun, 67% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 87% of Morning Sun residents were born in Iowa, 12% were born out of state, 0% were born outside of the United States and 1% were foreign born.