Fredonia, IA has a population of 313 and is the 22,258th largest city in the United States. The population density is 1,891 per sq mi which is 3361% higher than the Iowa average and 1987% higher than the national average. The median age in Fredonia is 27 which is approximately 28% lower than the Iowa average of 38. In Fredonia, 59% of the population over 15 years of age are married, 48% speak English and 52% speak Spanish. 59% of Fredonia residents were born in Iowa, 14% were born out of state, 1% were born outside of the United States and 26% were foreign born.