Dixon, IA has a population of 216 and is the 24,105th largest city in the United States. The population density is 1,731 per sq mi which is 3068% higher than the Iowa average and 1810% higher than the national average. The median age in Dixon is 39 which is approximately 4% higher than the Iowa average of 38. In Dixon, 58% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 79% of Dixon residents were born in Iowa, 20% were born out of state, 1% were born outside of the United States and 0% were foreign born.