Russell County is a historic county in the Canadian province of Ontario.
It was created in 1800 from a portion of Stormont County. It later merged with Prescott County to form Prescott and Russell United Counties.
Cumberland Township became part of the Regional Municipality of Ottawa-Carleton in 1968, and is now part of the single-tier city of Ottawa.
See also List of Ontario census divisions.
1951 map of Russell County (http://www.archives.gov.on.ca/english/exhibits/maps/counties/russell.htm)