Detention is a quiet locality in Tasmania within the Circular Head local government area (postcode 7321). With a population of 35, the suburb has a young demographic with a median age of 24. Households earn a median income of $7K per year, with an average household size of 4.4 people. The top ancestries reported are Scottish, Irish, English.

The median monthly mortgage repayment is $1,986.

Public transport access includes 2 bus stops.