The Post Office building for Yellowknife, Northwest Territories, Canada, serving the X1A postal codes, is located at the southwest corner of 49th Street and Franklin (50th) Avenue. It is a two-storey concrete building in a late modernist style dating to the mid-20th century. In 2006 it was designated a City of Yellowknife Heritage Site in recognition of its long standing role as a social centrepiece for the downtown community; it has been administratively listed on the Canadian Register of Historic Places as a result. "This is where you went to find everybody" in the 1960s, one city councillor recalled when the building received its heritage plaque in 2010.