Castle Hill, NSW is located approximately 30 km north-west from the Sydney central business area and 9.5 kilometers north of Parramatta. It is located in the Hills District region. It is divided between The Hills Shire’s local government area and Hornsby Shire’s.
Castle Hill’s commercial zone is located on the eastern side of the Old Northern Road. The southern end is a more traditional shopping area with the modestly-sized Castle Mall shopping center. The large Castle Towers shopping center dominates the northern part of the mall. In 2004, Castle Towers was surrounded by a new library and community center, which also features a building housing units on the upper floors.
The local council has completed the work to transform the Old Northern Road, between Castle Mall & Castle Towers, into an open-air plaza walkway. The nearby Terminus Street has been used as a detour to divert traffic. The approval of the A$900 million plan for an additional 80,000 square meters to Castle Towers Shopping Centre has been granted. This will make Castle Towers the largest shopping centre in New South Wales with 190,000 sqm of floorspace.
Castle Hill has a small industrial area on the suburb’s west side. It is connected to the commercial area via Showground Road. This area is adjacent to the Castle Hill Showground, as well as the former Hills Shire Council Chambers (and Hills Centre).
Castle Hill is composed of low- and medium-density housing with a few apartment buildings. Castle Hill’s largest residential area is found between the industrial and commercial areas on Showground Road. The east side of the commercial area contains smaller residential areas. Bidjigal Reserve follows creeks to climb Bald Hill via Platypus track. Murri Yanna, which begins at Aiken Road, Heidi Place, and continues along Darling Mills Creek until North Parramatta, has smaller residential areas.
Although there were many plans to build rail lines through the suburb, none of them ever got past the proposal stage. The Sydney Metro Northwest was announced June 2013, by the State Government for the Hills District. The project was started in 2014 and it was opened to the public on 26 May 2019. It connects Tallawong with Chatswood via Epping. It will be extended to Bankstown in 2024.
The Hills Centre for the Performing Arts is a theatre and convention center located on Showground Road in Castle Hill. It was opened in late 1988. It was owned by The Hills Shire Council and was the largest venue of its kind in New South Wales. In 2013, it was demolished to make way for Sydney Metro Northwest.
The Castle Hill Players presented six plays per year at the Pavilion Theatre on the Castle Hill Showground.
The Museums Discovery Centre is a collaboration of the Museum of Applied Arts and Sciences, Australian Museum (AM), and Sydney Living Museumss (SLM). The Museums Discovery Centre, which is located at the corner of Windsor Road and Showground Road in Castle Hill, provides off-site storage and care facilities.
The Hills Craft Markets open every Sunday, except in January. There are many arts, crafts, and foods for sale. The showground offers many activities for children, including music, plaster painting, and riding.
Castle Hill Showground hosts the annual Castle Hill Agricultural Show in March. This show dates back from the 1880s, and it reflects the Hills District’s heritage. It is mostly agricultural, with many horse, sheep and cattle competitions every year. Castle Hill also features novelty items, showbags, and educational stalls.