Solon, IA has a population of 2,399 and is the 10,067th largest city in the United States. The population density is 1,829 per sq mi which is 3247% higher than the Iowa average and 1918% higher than the national average. The median age in Solon is 36 which is approximately 7% lower than the Iowa average of 38. In Solon, 65% of the population over 15 years of age are married, 97% speak English and 3% speak Spanish. 78% of Solon residents were born in Iowa, 20% were born out of state, 0% were born outside of the United States and 2% were foreign born.