The district was created in 1952 as "Glengarry—Prescott" from parts of
Glengarry and
Prescott ridings. It consisted of
Prescott County and
Glengarry County. In 1966, it was expanded to include
Russell County excluding
Cumberland Township. In 1970, the name was changed to "Glengarry—Prescott—Russell". In 1976, the district was redefined to exclude
Charlottenburgh Township and include Cumberland Township. In 1987, it was redefined to consist of the United Counties of Prescott and Russell, the County of Glengarry and Akwesasne Indian Reserve No. 59 in the United Counties of Stormont, Dundas and Glengarry, and the part of the Township of Cumberland excluding the part north of Innes Road and west of Regional Road No. 57 and Trim Road. In 1996, it was redefined to consist of the United Counties of Prescott and Russell, the County of Glengarry (excluding the Township of Charlottenburgh), the Township of Cumberland in the Regional Municipality of Ottawa-Carleton, excluding the part west of Trim Road and North of Innes Road. In 2003, it was redefined to consist of the United Counties of Prescott and Russell, the Township of North Glengarry in the United Counties of Stormont, Dundas and Glengarry, and the part of the City of Ottawa east Cardinal Creek, Regional Road No. 174, Trim Road Wall Road, Mer Bleue Road and Boundary Road. Following the
2012 redistribution of Canada's ridings, the riding lost the
Cardinal Creek and
Carlsbad Springs area to
Orléans. Following the
2022 Canadian federal electoral redistribution, this riding will be renamed
Prescott—Russell—Cumberland at the first election held after approximately April 2024. It will gain the area east of Cardinal Creek and the rural area around the
Mer Bleue Bog south to
Highway 417 (including
Carlsbad Springs and
Ramsayville) from Orléans, and will gain a small piece of territory south of Innes Road from
Ottawa—Vanier. It will lose all of the City of
Ottawa south of Highway 417 to
Carleton and
North Glengarry to
Stormont—Dundas—Glengarry. == Demographics ==