Mount Barker Junction is a quiet locality in South Australia within the Mount Barker local government area (postcode 5251). With a population of 8, the suburb has an established demographic with a median age of 39. Households earn a median income of $208K per year, with an average household size of 3.3 people. The top ancestries reported are English, Australian, German.

The median monthly mortgage repayment is $1,200.