| Type: | town |
| Detention | |
| State: | tas |
| Pop: | nil |
| Pop Footnotes: | [1] |
| Postcode: | 7321 |
| Region: | North-west and west |
| Location1: | Smithton |
| Dist1: | 35 |
| Dir1: | E |
| Lga: | Circular Head |
| Stategov: | Braddon |
| Fedgov: | Braddon |
| Near-Nw: | Bass Strait |
| Near-N: | Bass Strait |
| Near-Ne: | Bass Strait |
| Near-E: | Rocky Cape |
| Near-W: | Hellyer |
| Near-Sw: | Hellyer |
| Near-S: | Rocky Cape |
| Near-Se: | Rocky Cape |
Detention is a rural locality in the local government area (LGA) of Circular Head in the North-west and west LGA region of Tasmania. The locality is about east of the town of Smithton. The 2016 census recorded a population of nil for the state suburb of Detention.[1]
Detention was gazetted as a locality in 1973.[2]
The Detention River, from which the locality takes its name, was so named in 1826 when a party of surveyors was stranded (detained) there by a flood.[3]
The estuary of the Detention River forms the western boundary, and the waters of Bass Strait the northern.
Route A2 (Bass Highway) runs through from east to west.[2] [4]