Deagon is an outer northern suburb in the City of Brisbane, Queensland, Australia. In the 2021 census, Deagon had a population of 3,773 people.

In the 2011 census, the population of Deagon was 3,460,

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 Transport for Brisbane and Hornibrook Bus Lines. All public transport services in Deagon are operated under Translink Including school bus services operated by Thompson Bus Lines.