Dike, IA has a population of 1,309 and is the 13,518th largest city in the United States. The population density is 937 per sq mi which is 1616% higher than the Iowa average and 935% higher than the national average. The median age in Dike is 41 which is approximately 7% higher than the Iowa average of 38. In Dike, 69% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 88% of Dike residents were born in Iowa, 12% were born out of state, 1% were born outside of the United States and 0% were foreign born.