Wadena is a city in Fayette County, Iowa, United States. The population was 209 at the time of the 2020 census.
Geography
Wadena is located along Iowa County Road W51, two miles south of Iowa State Route 56. It is located in Iowa's Driftless Area.
According to the United States Census Bureau, the city has a total area of , all land.
The Volga River is located on the south side of the city.