It has 3 reserves in total, the largest and most populated of which is St. Theresa Point, which is bordered by the unorganized portion of Division No.

The reserve is only accessible by airplane or winter ice roads (which continue north towards Garden Hill , and southwest towards Manigotagan, with a branch leading towards Berens River).

[4] St. Theresa Point First Nation once belonged to the Island Lake band,[4] who, on 13 August 1909, became a signatory of Treaty 5.

[5][6] In 2011, the Island Lake communities (including St. Theresa Point FN) had a combined population of 7,120.

The First Nation has a Custom Electoral System and is governed by an elected Chief and eight councillors.