The Similkameen Country, also referred to as the Lower Similkameen Valley or Similkameen District, but generally referred to simply as The Similkameen or more archaically, Similkameen, is a region roughly coinciding with the basin of the river of the same name in the Southern Interior of British Columbia. The term "Similkameen District" also refers to the Similkameen Mining District, a defunct government administrative district, which geographically encompasses the same area, and in more casual terms may also refer to the Similkameen electoral district, which was combined with the Grand Forks-Greenwood riding by the time of the 1966 election. The Similkameen Country has deep historical connections to the Boundary Country and the two are sometimes considered one region, partly as a result of the name of the electoral district. It is also sometimes classed as being part of the Okanagan region, which results from shared regional district and other administrative boundaries and names. The term "Similkameen District" may also historically refer to the Similkameen Division Yale Land District, which also includes Osoyoos and the Boundary Country to Osoyoos' east.