Lloydminster is a Canadian city which has the unusual geographic distinction of straddling the provincial border between Alberta and Saskatchewan. Unlike most such cases (such as Texarkana and Kansas City), Lloydminster is not a pair of twin cities on opposite sides of a border which merely share the same name, but is incorporated by both provinces as a single city with a single municipal administration.
The provincial border runs north to south, falling directly on 50th Avenue (Meridian Avenue) in the centre of Lloydminster. Addresses east of 50th Avenue are considered to be in Lloydminster, Saskatchewan and addresses west of 50th Avenue are considered to be in Lloydminster, Alberta. The city is bordered by the County of Vermilion River, Alberta, on the west, the Rural Municipality (R.M.) of Britannia No. 502, Saskatchewan, on the northeast and the R.M. of Wilton No. 472, Saskatchewan, on the southeast.