In 2022, the population of Nodaway was 73, a 0.00% decrease year-by-year from 2021. Previously, in 2021, Nodaway's population was 73, a decline of 2.67% compared to a population of 75 in 2020.
The median age in Nodaway, IA is 55.3, as per 2021 ACS 5-Year Estimates. Of the total population, 17.54% were under the age of 15, 10.53% aged 15 to 29, 40.35% aged 30 to 64, 31.58% aged 65 to 84, and 0.00% were 85 years of age and older.