Census divisions of Ontario in the context of Algoma District

Parry Sound District is a census division of the Canadian province of Ontario. Its boundaries are District of Muskoka to the south, the Sudbury District to the north-northwest, the French River and Lake Nipissing in the north, Nipissing District and North Bay in the north and east and parts of Algonquin Park in the northeast.

It is geographically in Southern Ontario, but the Ontario and federal governments administer it as part of Northern Ontario. Like other census divisions in Northern Ontario, it does not have an incorporated county, regional municipality, or district municipality level of government but instead serves as a purely territorial division, like the other districts of Northern Ontario. Instead of an upper tier of municipal administration, all government services in the district are provided by the local municipalities or by the provincial government itself.

Manitoulin District is a district in Northeastern Ontario within the Canadian province of Ontario. It was created in 1888 from part of the Algoma District. The district seat is in Gore Bay.

It comprises Manitoulin Island primarily, as well as a number of smaller islands surrounding it, such as Barrie, Cockburn, and Great La Cloche islands. Previously it included the municipality of Killarney on the mainland, until this was transferred to Sudbury District in the late 1990s. Subsequently, more mainland portions were added to Killarney and these, together with Unorganized Mainland Manitoulin District, were also transferred to Sudbury District in 2006, about 1,600 square kilometres (600 sq mi) in all.