The Calgary Metropolitan Region (CMR), also commonly referred to as the Calgary Region, is a conglomeration of municipalities centred on Calgary, the largest city in Alberta. With the Government of Alberta's establishment of the Calgary Metropolitan Region Board (CMRB) in 2017, the CMR's boundaries were legislated to include the City of Calgary, Foothills County to the south, Rocky View County to the west, north, and east, and a western portion of Wheatland County further to the east. Also within these boundaries are the cities of Airdrie and Chestermere, seven towns: Cochrane, Crossfield, Diamond Valley, High River, Irricana, Okotoks, and Strathmore, two villages: Beiseker and Longview, and two First Nations communities: Tsuu T'ina 145 and Eden Valley 216. Not all of these, however, are administrative members of the CMRB. The Calgary census metropolitan area (CMA) as delineated by Statistics Canada is smaller than the CMR. The Calgary CMA includes Calgary, Rocky View County, Airdrie, Beiseker, Chestermere, Cochrane, Crossfield, Irricana, and Tsuu T'ina 145. The Calgary Metropolitan Region is a major transportation hub for southern Alberta, Saskatchewan, eastern British Columbia, and parts of the northern United States. It is home to the Calgary International Airport, the fourth busiest airport in Canada in terms of total aircraft movements. Calgary CMA The Calgary CMA, as defined by Statistics Canada, includes the following nine municipalities: three cities (Airdrie, Calgary and Chestermere); one municipal district (Rocky View County, which includes Langdon – the CMA's largest hamlet); three towns (Cochrane, Crossfield, and Irricana); one village (Beiseker); and one First Nations reserve (Tsuu T'ina Nation, which includes the Townsite of Redwood Meadows). In the 2011 Census, the Calgary CMA had a population of 1,214,839 living in 464,001 of its 488,451 total dwellings, a 12.6% change from its 2006 population of 1,079,310, making it the largest CMA in Alberta and the fourth largest in Canada. With a land area of , it had a population density of 237.9 people per square kilometre in 2011. Also in terms of area, the Calgary CMA makes up approximately 40% of Statistics Canada's Division No. 6 in Alberta. The balance of Division No. 6 includes the census consolidated subdivisions of the MD of Foothills No. 31 to the south and Mountain View County to the north. Foothills County and the municipalities within are often considered as part of Calgary's metropolitan area due to, among other things, the MDs shared boundary with the City