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Symonston, Australian Capital Territory

Coordinates: 35°20′47″S 149°10′40″E / 35.34639°S 149.17778°E / -35.34639; 149.17778
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CanberraAustralian Capital Territory
Symonston is located in Australian Capital Territory
Coordinates35°20′47″S 149°10′40″E / 35.34639°S 149.17778°E / -35.34639; 149.17778
Population655 (SAL 2021)[1]
Gazetted20 September 1928
Elevation583 m (1,913 ft)
Area9.90 km2 (3.8 sq mi)
Territory electorate(s)Kurrajong
Federal division(s)
Suburbs around Symonston:
Narrabundah Fyshwick
O'Malley Symonston Queanbeyan
Hume HMAS Harman

Symonston (postcode: 2609) is a primarily industrial and agricultural suburb of Canberra, Australian Capital Territory, Australia. Symonston is named after Sir Josiah Symon a Legislator, Federalist and one of the Founders of the Constitution of Australia.[2]

Located in Symonston are the Periodic Detention Centre and Symonston Temporary Remand Centre and three caravan parks: Canberra South Motor Park, Sundown Village and Narrabundah Longstay Caravan Park. Geoscience Australia has its headquarters in Symonston, as does the Therapeutic Goods Administration.


The Symonston area has traditionally been denoted 'Broadacre' area by the planning authorities, meaning that it has retained a traditionally rural character with some larger institution uses, particularly by the Australian Defence Force and Geoscience Australia. With the release of the Canberra Spatial Plan by the ACT Government, the area and the adjoining Majura Valley has been denoted as an employment corridor centred on Canberra Airport and Fyshwick.


Rocks in Symonston are from the Silurian age Mount Painter Volcanics dark grey to green grey dacitic tuff underlies most of Symonston. Narrabundah Ashstone Member is found in the northern corner near the motor park. Canberra Formation, calcareous shale found to the east of the ashstone. Further to the east and over to Harman is found the dacitic andesite of the Ainslie Volcanics. An unnamed coarse leucogranite has a small out crop east of Jerrabomberra creek.[3]

Geoscience Australia is the Australian Government organisation tasked with supplying scientific information and knowledge about the geography and geology of Australia. It has information about the geology of the whole of Australia including Canberra.

Geoscience Australia in Symonston
Aerial view from east


Symonston residents get preference for:[4]


  1. ^ Australian Bureau of Statistics (28 June 2022). "Symonston (suburb and locality)". Australian Census 2021 QuickStats. Retrieved 28 June 2022. Edit this at Wikidata
  2. ^ "Suburb Name search results". ACT Environment and Sustainable Development. Retrieved 9 February 2014.
  3. ^ Henderson G A M and Matveev G, Geology of Canberra, Queanbeyan and Environs 1:50000 1980.
  4. ^ "Priority Enrolment Areas 2015 by Suburb" (Archive). Education Directorate, Australian Capital Territory. Retrieved 8 February 2016.