In 2022, the population of Iatan was 42, a 5.00% increase year-by-year from 2021. Previously, in 2021, Iatan's population was 40, a decline of 0.00% compared to a population of 40 in 2020.
The median age in Iatan, MO is 66.5, as per 2021 ACS 5-Year Estimates. Of the total population, 0.00% were under the age of 15, 0.00% aged 15 to 29, 50.00% aged 30 to 64, 50.00% aged 65 to 84, and 0.00% were 85 years of age and older.