Brandon, IA has a population of 330 and is the 21,970th largest city in the United States. The population density is 1,046 per sq mi which is 1815% higher than the Iowa average and 1055% higher than the national average. The median age in Brandon is 35 which is approximately 7% lower than the Iowa average of 38. In Brandon, 58% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 92% of Brandon residents were born in Iowa, 8% were born out of state, 0% were born outside of the United States and 0% were foreign born.