Minburn, IA has a population of 366 and is the 21,364th largest city in the United States. The population density is 1,425 per sq mi which is 2508% higher than the Iowa average and 1472% higher than the national average. The median age in Minburn is 38 which is approximately 1% lower than the Iowa average of 38. In Minburn, 63% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 82% of Minburn residents were born in Iowa, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.