Northgate is a suburb in the City of Brisbane, Queensland, Australia. In the 2021 census, Northgate had a population of 4,876 people. The land area comprises industrial and residential areas. Inter war homes can be found on Northgate Hill—elevated land that rises west of the railway station; and post World War II real estate on "the flat"—the large arc of flat land th…Northgate is a suburb in the City of Brisbane, Queensland, Australia. In the 2021 census, Northgate had a population of 4,876 people. The land area comprises industrial and residential areas. Inter war homes can be found on Northgate Hill—elevated land that rises west of the railway station; and post World War II real estate on "the flat"—the large arc of flat land that extends to Moreton Bay at Nudgee Beach with most of the housing stock being post-WWII.