Leslie Park is a suburban neighbourhood in College Ward in the city of Ottawa, Ontario, Canada. It is located in the former city of Nepean. Leslie Park is bounded on the north by Baseline Road, on the east by Greenbank Road and on the south by the OCRR. The Leslie Park Community Association has the fence west of Costello St as the western boundary. According to the Canada 2011 Census, the population of the neighbourhood (including the Valley Steam area) was 3,134.The neighbourhood was built from 1963-1970's. Monterey Drive has lots of stone brick English style townhouses. By the 1970s more townhouses were built on Costello Avenue and a 17 unit condominium was built at 50 Greenbank. In the early 2000s more townhouses were built west of Guthrie between Monterey and Baseline Road. Leslie Park is one of the neighbourhoods that has the oldest trees that are over 100 years old. Leslie Park contains two parks (Leslie Park, and Brucelands Park). It also contains two schools (Leslie Park Public School and St. John the Apostle Catholic School).