Stuart, IA has a population of 1,528 and is the 12,576th largest city in the United States. The population density is 555 per sq mi which is 916% higher than the Iowa average and 513% higher than the national average. The median age in Stuart is 44 which is approximately 15% higher than the Iowa average of 38. In Stuart, 60% of the population over 15 years of age are married, 98% speak English and 2% speak Spanish. 88% of Stuart residents were born in Iowa, 11% were born out of state, 0% were born outside of the United States and 0% were foreign born.