Robins, IA has a population of 3,434 and is the 8,143rd largest city in the United States. The population density is 570 per sq mi which is 943% higher than the Iowa average and 529% higher than the national average. The median age in Robins is 46 which is approximately 22% higher than the Iowa average of 38. In Robins, 77% of the population over 15 years of age are married, 93% speak English and 1% speak Spanish. 70% of Robins residents were born in Iowa, 24% were born out of state, 0% were born outside of the United States and 6% were foreign born.