Baulkham Hills is a suburb in the Hills District of Greater Western Sydney. It is 31 kilometres north-west of the CBD within the local goverment area of The Hills Shire, with a small portion south of the M2 Motorway in the City of Parramantta. Baulkham Hills is the administrative seat of The Hills Shire, an outer metropolitan shire within Greater Sydney. The suburb is also the most populous within the Hills Shire. It is known colloquially as “Baulko”.
Baulkham Hills is predominately a residential suburb of the Hills Dictric, with Norwest Business Park in the northern part of the suburb. Baulkham Hills Junction is the intersection of three major roads; Windsor Road, Old Northern Road, and Seven Hills Road. It is also bound by Old Windsor Road and the North-West T-way in the west; and the Hills Motorway in the south, forming part of the National Highway.
Baulkham Hills is primarily accessible by road. At the intersection known as Baulkham Hills Junction several major roads meet including: Seven Hills Road, Old Northern Road and Windsor Road. The fastest route from the Sydney CBD is via the M2 Hills Motorway, exiting at Windsor Road.
Stockland Baulkham Hills is a shopping centre , located on the intersection of Windsor Road and Old Northern Road. It features supermarkets operated by Coles, Woolworths and Aldi plus 70 specialty shops. A redevelopment was completed in 2008 to significantly expand the floor space of the centre.
In the northern part of the suburb, there is another shopping centre called Norwest Marketown, together with many other businesses. The Norwest Business Park located nearby is partially in Baulkham Hills and mostly in Bella Vista .