Owen Sound is a city in Southwestern Ontario, Canada. The seat of government of Grey County, it is located at the mouths of the Pottaw…Owen Sound is a city in Southwestern Ontario, Canada. The seat of government of Grey County, it is located at the mouths of the Pottawatomi and Sydenham Rivers on an inlet of Georgian Bay. The primary tourist attractions are the many waterfalls within a short drive of the town.