Barrie City Guide The city of Barrie is believed to be 34th largest among the cities in Canada. It has a population of slightly more than 150, 000 people living and working within the city. Barrie is situated in Central Ontario, Canada along the western shores of Lake Simcoe. With an area of 76.99 square kilometers for the city, 171.53 square kilometers for Urban and 897.47 square-kilometers for the...