Alberta (/ælˈbɜːrtə/) is a western province of Canada. With an estimated population of 4,196,457 as of July 1, 2015, it is Canada's fourth-most populous province and the most populous of Canada's three prairie provinces. Alberta and its neighbour Saskatchewan were districts of the Northwest Territories until they were established as provinces on September 1, 1905. The premier has been Rachel Notley since May 2015.
Alberta is bounded by the provinces of British Columbia to the west and Saskatchewan to the east, the Northwest Territories to the north, and the US state of Montana to the south. Alberta is one of three Canadian provinces and territories to border only a single US state and one of only two landlocked provinces. It has a predominantly humid continental climate, with stark contrasts over a year but seasonal temperature average swings are smaller than to areas further east, due to winters being warmed by occasional chinook winds bringing sudden warming.
Alberta's capital, Edmonton, is near the geographic centre of the province and is the primary supply and service hub for Canada's crude oil, oil sands (Athabasca oil sands) and other northern resource industries.
About 290 km (180 mi) south of the capital is Calgary, the largest city in Alberta. Calgary and Edmonton centre Alberta's two census metropolitan areas, both of which have populations exceeding one million, while the province has 16 census agglomerations. Tourist destinations in the province include Banff, Canmore, Drumheller, Jasper and Sylvan Lake.