Wanamingo is a community in Goodhue County, Minnesota, United States, incorporated as a city.

[4] The ethanol company POET LLC started on the farm of Lowell Broin in 1983 near the community.

According to the United States Census Bureau, the city has a total area of 1.40 square miles (3.63 km2), all land.

There were 503 housing units at an average density of 359.3 per square mile (138.7/km2).

31.0% of all households were made up of individuals, and 13.9% had someone living alone who was 65 years of age or older.

28.0% of all households were made up of individuals, and 15.6% had someone living alone who was 65 years of age or older.