Humeston, IA has a population of 400 and is the 20,890th largest city in the United States. The population density is 656 per sq mi which is 1101% higher than the Iowa average and 624% higher than the national average. The median age in Humeston is 49 which is approximately 28% higher than the Iowa average of 38. In Humeston, 68% of the population over 15 years of age are married, 93% speak English and 1% speak Spanish. 82% of Humeston residents were born in Iowa, 16% were born out of state, 2% were born outside of the United States and 0% were foreign born.