The Regional Municipality of Halton, or Halton Region, is a regional municipality in Ontario, Canada, located in the Golden Horseshoe of Southern Ontario. It comprises the city of Burlington and the towns of Oakville, Milton, and Halton Hills. The region provides policing by the Halton Regional Police Service. The regional council's headquarters are located in Oakville. Burlington and Oakville are largely urban and suburban, while the towns of Milton and Halton Hills are more rural.
Halton is part of the Greater Toronto Area, although it is the only regional municipality in the GTA that is not situated directly adjacent to Toronto’s city proper. However, the region is split between the census metropolitan areas of Toronto and Hamilton. Burlington is part of the Hamilton CMA, while the rest of the region is part of the Toronto CMA.
Halton experienced a growth rate of 17.1% between 2001 and 2006, and 14.2% between 2006 and 2011, giving it one of the highest growth rates in the country. Despite the unprecedented growth in residential development, agriculture and protected lands along the Niagara Escarpment are still the predominant land uses in the region.