Yellowknife territorial government by seven of the 19 Members of the Legislative Assembly of the Northwest Territories (MLAs). These MLAs are elected every four years and sit in the Northwest Territories Legislative Building, located in Yellowknife. The MLAs elect the Speaker of the House as well as six Cabinet Ministers and the Premier, which forms the cabinet. In addition, a Commissioner is appointed by the Federal Government to fulfil a similar role to that of the Lieutenant Governor. The Northwest Territories is one of only two federal, provincial or territorial jurisdictions in Canada that operate under a consensus system of government.
Yellowknife also resulted in new discoveries at the Con Mine, greatly extending the life of the mine. The Yellowknife townsite expanded from the Old Town waterfront, and the new townsite was established during 1945–1946. The Discovery Mine, with its own townsite, operated to the north-northeast of Yellowknife from 1950 to 1969. Between 1939 and 1953, Yellowknife was controlled by the Northern Affairs department (now Indigenous and Northern Affairs Canada) of the Government of Canada. A small council, partially elected and partially appointed, made decisions. By 1953, Yellowknife had grown so much that it was made a municipality, with its own council