the national capital region () is an official federal name for the canadian capital of ottawa, ontario, and neighbouring gatineau, quebec, and the area near them. the national capital region has an area of 5,319 square kilometres that straddles the boundary between the provinces of ontario and quebec. the national capital region covers an area of 6,287.03 square kilometres (2,427.44 square miles). it has a population of 1,235,324. the ottawa part of the region is part of the eastern subregion of ontario. the ottawa-gatineau cma is the only cma in canada to include parts of two provinces.