WEBOct 17, 2012 · Barrie, Ontario, incorporated as a city in 1959, population 147,829 (2021 census), 141,434 (2016 census). Barrie is located at the head of Kempenfelt Bay, on the western edge of Lake Simcoe. Located within Simcoe County, Barrie shares borders with the municipalities of Oro-Medonte, Springwater, Essa and Innisfil.