Collanilling is a quiet locality in Western Australia within the Wagin local government area (postcode 6315). With a population of 17, the suburb has a mature demographic with a median age of 45. Households earn a median income of $130K per year, with an average household size of 5 people. The most common occupations are managers, labourers. The top ancestries reported are Australian, English.

The median weekly rent is $250 (Census 2021).