Innisfil is a town in Ontario, Canada, located on the western shore of Lake Simcoe in Simcoe County, immediately south of Barrie and 80 kilometres (50 mi) north of Toronto. It has historically been a rural area, but due to being geographically sandwiched in between the high-growth areas of Barrie area and York Region has meant greater residential development in Innisfil.

The history of Innisfil spans a period in excess of 170 years. The Town was hewn from almost unbroken virgin forests which had been home to the Huron Indians, and was first surveyed in 1820. The area encompassed 68,653 acres (278 km²), including the villages of Allandale, Tollendal, Painswick, Minets Point, and Holly at the time.

The first settlers were the Hewson and Soules families who came by way of the East Holland River and Lake Simcoe to settle at Point Endeavour; they renamed the area Hewson’s Point (later named Big Bay Point). The Hewsons settled on March 30, 1820, and the Soules in 1822. The Warnica family settled the following year, in 1823, in the area now known as Painswick. The first sawmill in the Township was built at Tollendal by George McMullen in 1829. At this time James Soules owned a sawmill on the south half of lot 26 concession fourteen (Big Bay Point), Innisfil where he made the lumber for the construction of the first frame house in Innisfil for Lewis J. Clement.

John and George Warnica completed the clearing of the bush between Barrie and Churchill. John Cayton had won the contract to open the road between Churchill and the 11th line of West Gwillimbury but only made it one mile north to the 12th, known as Cayton’s Corners. Owing to his slight acquaintance with the forest, he sub-let the work to John and George Warnica who completed Cayton’s contract between the 4th line of Innisfil (Churchill) and the 12th line of West Gwillimbury, north of Bradford. This opened the land route, known as Penetanguishene Road, which later became Highway 11 and is now Yonge Street. This route between York (now Toronto) and Barrie was completed in the fall of 1825.

Along this road the settlers came, and spread out along the concession lines to clear the lands and develop their farms. There had been those who came ahead by way of the river and the lake; many settled near the shores of Lake Simcoe and Kempenfelt Bay. The only channels of communication were the public roads, and these were scant and poor.

The pioneer farms cut from the forest were mostly self-sustaining. What few products there were for sale found a market in nearby Barrie, which was then little more than a village. Distant York was reached in the winter when the ice and snow made for better roads.

During this period, post offices, churches, and stores were established, also a form of local government performed by commissioners was appointed under a provincial act. The first post office, then called Innisfil, was located at what is now called Barclay’s Corners. The first school was built in 1838 and located at Myers Corners, later called Victoria (now the community of Stroud). The first church was also at Victoria, and was of Methodist denomination.

Milling in Innisfil was first done at Tollendal in 1835. The need for a grist mill to grind wheat is an indication of the progress toward an agricultural community.

The earliest official record of a census shows that by 1842 the population of Innisfil was 762.^[2]