Home Postcodes by state SA Millbrook Millbrook postcode SA Millbrook is a locality in South Australia covered by postcode 5231. Postcode 5231 State or territory South Australia (SA) Region Sa Subs Near 2 Council area Adelaide Hills Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Millbrook business listing Be the first listing in Millbrook Suburbs near MillbrookStraight-line distance between locality centres.InglewoodSA 5133 · 2.5 kmChain Of PondsSA 5231 · 2.7 kmLower HermitageSA 5131 · 2.9 kmHoughtonSA 5131 · 3.8 kmCudlee CreekSA 5232 · 3.9 kmParacombeSA 5132 · 4.2 kmUpper HermitageSA 5131 · 4.5 kmKersbrookSA 5231 · 5.9 kmTea Tree GullySA 5091 · 6.7 kmYatala ValeSA 5126 · 6.9 kmBanksia ParkSA 5091 · 7.1 kmCastambulSA 5076 · 7.3 kmDistances to every suburb around Millbrook Also in postcode 5231Chain Of PondsSA 5231KersbrookSA 5231 Other places called MillbrookMillbrookVIC 3352MillbrookWA 6330 Common questionsWhat is the postcode for Millbrook?Millbrook, SA has the postcode 5231.What state is Millbrook in?Millbrook is in South Australia (SA).What council is Millbrook in?Millbrook is in the Adelaide Hills local government area.Does postcode 5231 cover more than one suburb?Yes. Postcode 5231 covers 3 localities, so the postcode alone does not identify Millbrook.What suburbs are near Millbrook?The closest are Inglewood (2.5 km), Chain Of Ponds (2.7 km), Lower Hermitage (2.9 km), Houghton (3.8 km) and Cudlee Creek (3.9 km). Distances are straight lines between locality centres. Browse other postcodes in South Australia, or widen the search to every Australian postcode.