Cochrane District, Ontario is a district and census division in Northeastern Ontario in the Canadian province of Ontario. It was created in 1921 from parts of Timiskaming and Thunder Bay districts.
In 2006, the population was 82,503. The land area of this district is 141,247.30 km (54,522 mi). slightly smaller than the US State of Michigan and is the second largest district in Ontario after Kenora District. The district seat is Cochrane.
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