Emo is a small rural township, located along the Rainy River near the southwestern corner of northern Ontario, Canada, on the U.S. bordeā¦Emo is a small rural township, located along the Rainy River near the southwestern corner of northern Ontario, Canada, on the U.S. border directly north of the state of Minnesota. Emo had a population of 1,333 in the Canada 2016 Census and a population of 1,204 in the 2021 census.