The Ottawa District was a historic district in Upper Canada which existed until 1849. It was created in 1816 by splitting the counties of Prescott and Russell from the Eastern District. The district town was L'Orignal.
In 1849, the district was replaced by the United Counties of Prescott and Russell.
- Armstrong, Frederick H. Handbook of Upper Canadian Chronology. Toronto : Dundurn Press, 1985. ISBN 0-919670-92-X
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