Georgina (Canada 2006 Census population 42,346) is a town in south-central Ontario, and the northernmost municipality in the Regional Municipality of York. It forms part of the northern boundary of the Greater Toronto Area and is situated on the southern shores of 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.