The suburb was originally named Kororoit Creek, after the creek running through the suburb but was renamed after the Melbourne Hunt Club used the area to house their stock of game deer. The original Hunt Club building still stands on Ballarat Road, next to the Deer Park sports oval and is now a community centre. The Hunt Club was opened on Saturday, 11 July 1885. The Post Office opened in 1878 as Kororoit Creek and was renamed Deer Park in 1889. Following the discovery of gold in Ballarat and Bendigo, to the west, there became a great demand for explosives. Deer Park was chosen as the site of Melbourne's first explosives factory, commenced by Jones Scott and Co in about 1874 and later reformed as Australian Explosives and Chemical Co, then Nobel, Imperial Chemical Industries of Australia and New Zealand and most recently Orica. The site was chosen for its isolation, as it was several miles from the outskirts of Melbourne. The availability of water in Kororoit Creek was also a factor. In the 1920s, Nobel constructed a number of houses around its factory for workers and managers, expanding the former rural village into a substantial industrial suburb. A fatal accident at the factory in 1923 led to production of black powder being stopped. In 1928, Imperial Chemical Industries of Australia and New Zealand took control of the factory. A new Black Powder factory was built in Deer Park in 1936 and enlarged during World War II. Charcoal from Australian timbers also began to be manufactured. Suburban expansion in the 1920s was slowed during the 1930s depression, but in the post war period the suburb expanded rapidly. With labour shortages and a large demand for products during the post-war boom, ICI commenced housing development in Deer Park to attract workers to the area and many of the surrounding streets are named for localities in the UK, where ICI had operations.
Transport
Deer Park is serviced by a railway station on the Melton greater-metropolitan line. The electrification of the train line to Deer Park was expected to occur in the 1980s, however the project has been ignored by successive State Governments. Many residents believe the delay in upgrading the train line is related to the fact that Deer Park is situated in one of the safest Labor seats in the country. Melbourne bus routes 215, 400, 420, 422, 426 and 456 service the area, With the 422 and 420 servicing the Railway station. The main road through Deer Park is Ballarat Road, which carries traffic between Melbourne and Ballarat, Victoria's third largest city. Station Road intersects north-south with Ballarat Road and is a major local route. The Deer Park Bypass, completed in 2009, allows motorists to avoid the suburban streets of Deer Park on their journey from Melbourne to Caroline Springs, Ballarat and beyond.
Facilities
Education
Deer Park boasts two public primary schools, a Catholic primary school, and a secondary college.
Kororoit Creek is located on the northern boundary of the suburb. This area has been home to large healthy populations of native reptiles for thousands of years, including Tiger snake, Eastern Blue-tongued Lizard, Stump-tailed skink and Eastern brown snake. Unfortunately due to development these species are now rarely seen in the area. Due to more recent development of the Cairnlea estate and improved vegetation on the banks of Kororoit Creek, native species of frogs have taken advantage and have taken up residents in the new wetlands and lakes. The Common Eastern Froglet and even the now endangered Growling Grass Frog have been seen and heard in the new wetlands and around Kororoit Creek.
On the southern outskirts of the suburb there are large farm properties which have now being developed for housing under the development names Brimbank Gardens and St Andrews Field. This area surrounds Mount Derrimut, which saw the relocation of the Sunshine Golf Club to allow its former location East of Fitzgerald Road to be redeveloped as housing. The suburb has an Australian Rules football team competing in the Western Region Football League, a cricket club and a tennis club.
