Houghton, IA has a population of 152 and is the 25,619th largest city in the United States. The population density is 487 per sq mi which is 792% higher than the Iowa average and 438% higher than the national average. The median age in Houghton is 48 which is approximately 26% higher than the Iowa average of 38. In Houghton, 77% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 88% of Houghton residents were born in Iowa, 12% were born out of state, 0% were born outside of the United States and 0% were foreign born.