Eagle Grove, IA has a population of 3,468 and is the 8,091st largest city in the United States. The population density is 843 per sq mi which is 1444% higher than the Iowa average and 831% higher than the national average. The median age in Eagle Grove is 44 which is approximately 16% higher than the Iowa average of 38. In Eagle Grove, 64% of the population over 15 years of age are married, 94% speak English and 6% speak Spanish. 79% of Eagle Grove residents were born in Iowa, 16% were born out of state, 0% were born outside of the United States and 5% were foreign born.