Home Postcodes by state SA Lock Lock postcode SA Lock is a locality in South Australia covered by postcode 5633. Postcode 5633 State or territory South Australia (SA) Region SA Outer Suburbs Council area Elliston Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Add a free Lock business listing More business listings in Lock Suburbs near LockStraight-line distance between locality centres.WarrachieSA 5607 · 10.9 kmUlyerraSA 5670 · 16.3 kmMurdingaSA 5607 · 18.1 kmBoonerdoSA 5633 · 22.7 kmPeachnaSA 5607 · 23.6 km Businesses in LockLock Area SchoolWest Terrace · 08 86891019 Also in postcode 5633BoonerdoSA 5633 Common questionsWhat is the postcode for Lock?Lock, SA has the postcode 5633.What state is Lock in?Lock is in South Australia (SA).What council is Lock in?Lock is in the Elliston local government area.Does postcode 5633 cover more than one suburb?Yes. Postcode 5633 covers 2 localities, so the postcode alone does not identify Lock.What suburbs are near Lock?The closest are Warrachie (10.9 km), Ulyerra (16.3 km), Murdinga (18.1 km), Boonerdo (22.7 km) and Peachna (23.6 km). Distances are straight lines between locality centres. Browse other postcodes in South Australia, or widen the search to every Australian postcode.