Georgina (Canada 2016 Census population 45,418) is a town in south-central Ontario, and the northernmost municipality in the Regional Municipality of York and therefore the Greater Toronto Area. The town is bounded to the north by Lake Simcoe. Although incorporated as a town, it operates as a township, in which dispersed communities share a common administrative council. The largest communities are Keswick, Sutton and Jackson's Point; smaller communities include Pefferlaw, Port Bolster, Udora and Willow Beach. The town was formed by the merger of the Village of Sutton, the Township of Georgina and the Township of North Gwillimbury in 1971, and was incorporated in 1986. North Gwillimbury had previously been part of Georgina, but became its own township in 1826. It took its name from the family of Elizabeth Simcoe, née Gwillim.

Georgina was the proposed name for London, Ontario by John Graves Simcoe.

The main centres in Georgina are the communities of Keswick, Belhaven, Sutton West, Jackson's Point, Baldwin, Virginia, Pefferlaw, Port Bolster, Udora and Willow Beach. Other settlements include Jersey, Cedarbrae, Brown Hill, Island Grove, Elm Grove, Roche's Point (named for the family of Author Mazo de la Roche, who is buried in the cemetery, at St. George's Anglican Church, Sibbald Point), Sibbald Point, Virginia / Virginia Beach (originally called Frenchtown), McRae Beach, Duclos Point, Balfour Beach, Varney, Brighton Beach and a variety of other beach communities.

According to the Canada 2016 Census conducted by Statistics Canada:

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