Nodaway is a city in Nodaway Township, Adams County, Iowa, United States. The population was 74 at the time of the 2020 census. Noda…Nodaway is a city in Nodaway Township, Adams County, Iowa, United States. The population was 74 at the time of the 2020 census. Nodaway was incorporated in 1900. Nodaway was a shipping point on the Chicago, Burlington and Quincy Railroad.