Grand River, IA has a population of 227 and is the 23,883rd largest city in the United States. The population density is 1,092 per sq mi which is 1898% higher than the Iowa average and 1105% higher than the national average. The median age in Grand River is 41 which is approximately 7% higher than the Iowa average of 38. In Grand River, 57% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 80% of Grand River residents were born in Iowa, 19% were born out of state, 0% were born outside of the United States and 0% were foreign born.