Remsen, IA has a population of 1,824 and is the 11,563rd largest city in the United States. The population density is 1,401 per sq mi which is 2465% higher than the Iowa average and 1447% higher than the national average. The median age in Remsen is 39 which is approximately 2% higher than the Iowa average of 38. In Remsen, 65% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 89% of Remsen residents were born in Iowa, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.