The “O” Division RCMP is responsible for federal policing in Ontario, (exclusive of the National Capital Region), and has primary law enforcement authority in federal matters.
With a focus on organized crime, economic integrity, border enforcement and national security, the “O” Division RCMP enhances its police operations by working closely with police partners and other law enforcement agencies for a safe and secure Canada.
The Division has 1,608 members and employees and is headquartered in London, Ontario. It is led by Assistant Commissioner Steve White, who is responsible for overseeing the management and operations of the Division.
“O” Division locations are functionally divided into three districts within Ontario:
Greater Toronto Area District (GTA), the North East (NE) District, and the South West (SW) District. Each District is led by a Superintendent.
“O” Division came into existence in 1920 when the Force, which had the title “Royal North West Mounted Police” conferred on it by King Edward VII in 1904, was reorganized into Canada’s federal police force as the Royal Canadian Mounted Police.
The Division covered Ontario west of a line between Haileybury in the north and Belleville in the south and consisted of six detachments located at such strategic points as Haileybury, Sault Ste. Marie, Niagara Falls, Windsor, Bridgeburg (now part of Fort Erie) and Sarnia, with a headquarters established in Toronto.

Post Office Building, 6 Charles St. E.
RCMP Offices, Floors 2 and 3
“O” Division HQ, 1921-1936