Montour, IA has a population of 259 and is the 23,240th largest city in the United States. The population density is 567 per sq mi which is 938% higher than the Iowa average and 526% higher than the national average. The median age in Montour is 51 which is approximately 35% higher than the Iowa average of 38. In Montour, 76% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 80% of Montour residents were born in Iowa, 19% were born out of state, 0% were born outside of the United States and 2% were foreign born.