Sheldahl, IA has a population of 249 and is the 23,445th largest city in the United States. The population density is 298 per sq mi which is 445% higher than the Iowa average and 229% higher than the national average. The median age in Sheldahl is 42 which is approximately 11% higher than the Iowa average of 38. In Sheldahl, 56% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 75% of Sheldahl residents were born in Iowa, 24% were born out of state, 1% were born outside of the United States and 0% were foreign born.