Overbrook is an urban neighbourhood situated in Rideau-Rockcliffe Ward, in the east end of Ottawa, Ontario, Canada. It is located across the Rideau River from the neighbourhood of Sandy Hill and is just to the south of Vanier. To the east of Overbrook is the former City of Gloucester. It was constituted as a police village in 1922 and was annexed by the City of Ottawa in 1950.Overbrook covers an area of 3.04 square kilometres and has a population density of 3,174 people per square kilometre.