Elk Run Heights, IA has a population of 1,006 and is the 15,120th largest city in the United States. The population density is 947 per sq mi which is 1633% higher than the Iowa average and 945% higher than the national average. The median age in Elk Run Heights is 50 which is approximately 33% higher than the Iowa average of 38. In Elk Run Heights, 63% of the population over 15 years of age are married, 96% speak English and 3% speak Spanish. 83% of Elk Run Heights residents were born in Iowa, 15% were born out of state, 1% were born outside of the United States and 2% were foreign born.