The Southwestern Ontario Marketing Alliance (SOMA), is a partnership of Southwestern Ontario communities, grown out of natural economic ties. This region, knows as Ontario's Heartland, encompasses the municipalities of Aylmer, Ingersoll, Stratford, St. Marys, St. Thomas, Tillsonburg and Woodstock. It stretches across Elgin, Middlesex, Oxford and Perth counties. Learn more about our communities here.
