Donahue, IA has a population of 385 and is the 21,092nd largest city in the United States. The population density is 1,085 per sq mi which is 1887% higher than the Iowa average and 1098% higher than the national average. The median age in Donahue is 36 which is approximately 4% lower than the Iowa average of 38. In Donahue, 75% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 82% of Donahue residents were born in Iowa, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.