Jewell Junction, IA has a population of 1,230 and is the 13,883rd largest city in the United States. The population density is 317 per sq mi which is 481% higher than the Iowa average and 250% higher than the national average. The median age in Jewell Junction is 41 which is approximately 8% higher than the Iowa average of 38. In Jewell Junction, 69% of the population over 15 years of age are married, 95% speak English and 3% speak Spanish. 90% of Jewell Junction residents were born in Iowa, 7% were born out of state, 1% were born outside of the United States and 2% were foreign born.