Jackson Junction, IA has a population of 47 and is the 28,218th largest city in the United States. The population density is 8 per sq mi which is 86% lower than the Iowa average and 91% lower than the national average. The median age in Jackson Junction is 47 which is approximately 24% higher than the Iowa average of 38. In Jackson Junction, 70% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 89% of Jackson Junction residents were born in Iowa, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.