Fairbank, IA has a population of 1,168 and is the 14,191st largest city in the United States. The population density is 1,637 per sq mi which is 2896% higher than the Iowa average and 1707% higher than the national average. The median age in Fairbank is 40 which is approximately 5% higher than the Iowa average of 38. In Fairbank, 65% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 93% of Fairbank residents were born in Iowa, 7% were born out of state, 0% were born outside of the United States and 0% were foreign born.