Numa, IA has a population of 69 and is the 27,670th largest city in the United States. The population density is 156 per sq mi which is 185% higher than the Iowa average and 72% higher than the national average. The median age in Numa is 48 which is approximately 27% higher than the Iowa average of 38. In Numa, 55% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 72% of Numa residents were born in Iowa, 28% were born out of state, 0% were born outside of the United States and 0% were foreign born.