Nichols, IA has a population of 360 and is the 21,449th largest city in the United States. The population density is 1,552 per sq mi which is 2741% higher than the Iowa average and 1613% higher than the national average. The median age in Nichols is 44 which is approximately 14% higher than the Iowa average of 38. In Nichols, 56% of the population over 15 years of age are married, 86% speak English and 12% speak Spanish. 78% of Nichols residents were born in Iowa, 18% were born out of state, 1% were born outside of the United States and 3% were foreign born.