Muja is a quiet locality in Western Australia within the Collie local government area (postcode 6225). With a population of 18, the suburb has a mature demographic with a median age of 46. Households earn a median income of $71K per year, with an average household size of 2.1 people. The most common occupations are professionals, labourers.

The median weekly rent is $450 (Census 2021). The median monthly mortgage repayment is $1,300.