The riding runs from Lake Ontario in the southeast to the Uxbridge-Pickering town line in the north, and between Lake Ridge Road in the east and the Markham-Pickering town line in the west. It contains the town of Ajax and part of Pickering lying northeast of Finch Avenue, Valley Farm Road, Highway 401 and Brock Road.
The 2007 redistribution combined near-equal parts of Pickering-Ajax-Uxbridge and Whitby-Ajax to create this riding.
Manufacturing and retail trade are the major industries. Many residents are commuters who work in Toronto.