In 2022, the population of Clio was 66, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Clio's population was 66, a decline of 0.00% compared to a population of 66 in 2020.
The median age in Clio, IA is 38.3, as per 2021 ACS 5-Year Estimates. Of the total population, 18.87% were under the age of 15, 11.32% aged 15 to 29, 35.85% aged 30 to 64, 33.96% aged 65 to 84, and 0.00% were 85 years of age and older.