In 1805, the Legislative Assembly of Upper Canada bought the lands between Etobicoke and Hamilton from the Mississaugas aboriginal people, except for the land at the mouths of Twelve Mile Creek (Bronte Creek), Sixteen Mile Creek, and along the Credit River.
In 1962 the town of Oakville merged with its neighbouring villages (Bronte, Palermo, Sheridan, and the remainder of Trafalgar Township) to become the new Town of Oakville, reaching northwards to Steeles Avenue in Milton.
In 1973, the restructuring of Halton County into Halton Region brought the northern border southwards to just north of the future Highway 407.
The town also has the Oakville Buzz, a Junior "B" lacrosse team who won the Founders Cup in 2006.
The current rep lacrosse team is the Oakville Hawks.
Non-Christian religions include Islam: 2.0%, Hinduism: 1.3%, Sikhism: 1.1%, and Judaism: 0.7%. The median household income is $118, 671, Oakville has a long history of sporting.