Deagon is 18 kilometres (11 mi) north of the CBD.
The Jagera and Turrbal groups occupied land in the Brisbane and Ipswich areas. The exact boundaries are not known, however, the Turrbal generally occupied the area north of the Brisbane River. Both groups had closely related languages which are classified as belonging to the larger Yaggera language group. In nearby Shorncliffe the Ningy-Ningy clan had displaced the Turrbal by the 1850s.
The area has a rich indigenous history. Evidence of Aboriginal occupation can be found; in a bora ring at Nudgee Waterhole, and in sites of special importance at near Nundah, and by Aboriginal camps on the banks of the Cabbage Tree Creek.
The suburb was named after its railway station, which in turn was named in 1887 after William Deagon who was Mayor of Sandgate from 1882 to 1884. William Deagon was an old identity of the area, and his name was used for the locality when the railway line went through in 1887. He owned the Sandgate Hotel, a stopping place for the Cobb & Co. coaches. Deagon Street, the racecourse, the railway station and the Deagon Wetlands all bear his name.
Deagon Post Office opened on 18 June 1947 at Mr Torpie's store next to the railway station.
Sandgate District State High School opened in 1959. When the Minister of Education Jack Pizzey officially opened it in 1961, he said the school, which had an elaborate man-made lake in its grounds, was one of the most attractive in Queensland. Extensions were then completed four years after that. In the 1980s a performance hall and library building were added and then, in 2001–03, under the secondary school renewal program, a modern sports hall and home economics block.
In the 2016 census, Deagon recorded a population of 3,675 people, 51.1% female and 48.9% male.
The median age of the Deagon population was 42 years of age, 4 years above the Australian median.
75.7% of people living in Deagon were born in Australia, compared to the national average of 66.7%; the next most common countries of birth were England 3.9%, New Zealand 2.2%, Philippines 0.3%, Ireland 0.3%, Germany 0.4%.
87.3% of people spoke only English at home; the next most popular languages were 0.5% Tagalog, 0.4% Samoan, 0.4% Dutch, 0.4% Mandarin, 0.3% Japanese.
According to the 2016 census 14.3% of Deagon residents were born overseas and 8.8% speak a language other than English at home. This compares with 28.9% for Queensland as a whole. The most common foreign languages spoken were Tagalog, Samoan, Dutch, Mandarin and Japanese. 2.5% were of Aboriginal or Torres Strait Islander descent, compared to 4.0% for Queensland.
A training facility, Deagon Racecourse, lies to the north of the suburb. Horse racing in Deagon ceased in 1941, but the racecourse remains a first rate training establishment. The Bligh government intended to make the racecourse the centre for all greyhound racing in Brisbane (replacing ) but this plan was cancelled in February 2012.
The Gateway Arterial Road runs through the western side of the suburb.
The (Evergreen) Ching Chung Taoist Temple sits next to the Gateway Arterial Road. It was built at Deagon in 1991. There are three Halls which were built according to Taoist beliefs. The three halls are: The Hall of Three Purities, the Hall of Three Masters and the Hall of the Spiritual Garden. There is also a Memorial Hall of Ancestors.
Deagon has a flat topography with one of its boundaries being . The Creek's catchment is largely urbanised but the Boondall Wetlands, which is separated from Deagon by the Creek, plays an important role in providing essential habitat for a range of birds and animals, including migratory birds, which make their way from the arctic circle. The Boondall Wetlands near Deagon have ecosystems that are fresh as well as areas that are salt water. The smaller reserves such as Brighton and Deagon Wetlands are fresh water only. The Deagon Wetland is an important remnant of tea tree woodland on a 50ha site. Notable bird species include the striped honeyeater and the white-cheeked honeyeater.
Deagon can be easily accessed via Sandgate Road and the Gateway Motorway. Deagon also has a railway line with three stations easily accessed by Deagon residents: North Boondall, Deagon, and Sandgate. Deagon also has a variety of bus services operated by Brisbane Transport and Hornibrook Bus Lines. All public transport services in Deagon are operated under Translink Including school bus services operated by .
Deagon is home to the following popular fast food outlets:
- KFC, a new store opened in May 2008. The original store stood on the current location for over thirty years.
- Red Rooster
- Pizza Capers
Deagon is also home to:
- Deagon Chop shop
- Good Price Pharmacy Warehouse
- Deagon News
- a gym
- a 7-Eleven convenience store
- a Fresh 'N Save supermarket
- Sorrento Reception Lounge
- Kim Mancini art workshop
- Deagon Bulk Meats butchery
Sandgate District State High School is a government secondary (7–12) school for boys and girls at 41 Braun Street ( In 2017, the school had an enrolment of 1,056 students with 93 teachers (86 full-time equivalent) and 46 non-teaching staff (32 full-time equivalent). It includes a special education program.).
- Susan Kiefel, High Court of Australia judge, attended Sandgate District State High School (leaving at age 15 in Year 10)
- Kerri-Anne Kennerley, television celebrity, attended Sandgate District State High School
- Bill McBride, Indigenous photographer, attended Sandgate District State High School
- Wendy Turnbull OBE, international tennis player, attended Sandgate District State High School
- Australian Bureau of Statistics (27 June 2017). "Deagon (SSC)". 2016 Census QuickStats. Retrieved 20 October 2018.
- "Deagon Ward". Brisbane City Council. Brisbane City Council. Archived from the original on 9 March 2017. Retrieved 12 March 2017.
- "Deagon - suburb in City of Brisbane (entry 41702)". Queensland Place Names. Queensland Government. Retrieved 10 June 2019.
- Australian Bureau of Statistics (31 October 2012). "Deagon (State Suburb)". 2011 Census QuickStats. Retrieved 25 October 2013.
- "Better together! Recent church mergers in Queensland Baptists". The qb magazine: 32–33. August – September 2017.
- "Connect Baptist Church – Deagon". Connect Baptist Church. Archived from the original on 9 August 2019. Retrieved 9 August 2019.
- "Deagon". Queensland History of Racing. Archived from the original on 2 January 2015. Retrieved 2 January 2015.
- Sinclair, Bart (2 February 2012). "Racing Queensland concedes defeat on plans for Deagon training track". The Courier-Mail. Retrieved 2 January 2015.
- "Queensland Globe". State of Queensland. Retrieved 9 August 2019.
- "State and non-state school details". Queensland Government. 9 July 2018. Archived from the original on 21 November 2018. Retrieved 21 November 2018.
- "Sandgate District State High School". Retrieved 21 November 2018.
- "ACARA School Profile 2017". Archived from the original on 22 November 2018. Retrieved 22 November 2018.