As of 1 August 2014, it no longer had any territorial jurisdiction, but it continued to exist as a legal entity until 30 September 2015, when it was formally closed.

The diocese was established by the Ecclesiastical Province of Rupert's Land in 1902, and it was a major focus for missionary activity among the indigenous peoples there.

As set out in a June 2013 resolution of the Anglican Church's General Synod, the diocese of Keewatin ceased to operate on 31 December 2014.

It was formally closed on 30 September 2015, at which time Archbishop Ashdown retired as both diocesan bishop and as Metropolitan of Rupert's Land.

[1] The First Nations parishes in northwestern Ontario and northern Manitoba were separated from Keewatin on 1 June 2014 to form the new diocese of Mishamikoweesh.