Saylorville, IA has a population of 3,445 and is the 8,122nd largest city in the United States. The population density is 499 per sq mi which is 814% higher than the Iowa average and 451% higher than the national average. The median age in Saylorville is 45 which is approximately 19% higher than the Iowa average of 38. In Saylorville, 54% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 78% of Saylorville residents were born in Iowa, 21% were born out of state, 0% were born outside of the United States and 1% were foreign born.