Tonganah is a quiet locality in Tasmania within the Dorset local government area (postcode 7260). With a population of 25, the suburb has an established demographic with a median age of 42. Households earn a median income of $71K per year, with an average household size of 2.7 people. The most common occupations are technicians & trades, clerical & administrative, machinery operators & drivers. The top ancestries reported are Australian, English.

The median weekly rent is $282 (Census 2021). The median monthly mortgage repayment is $1,658.