Home Postcode finder SA Mclaren Flat Mclaren Flat postcode SA Mclaren Flat is a locality in South Australia covered by postcode 5171. Postcode 5171 State or territory South Australia (SA) Region Adelaide Add a free Mclaren Flat business listing More business listings in Mclaren Flat Businesses in Mclaren FlatComfort Driving School27RoseCrescent · 0412 744 326McLaren Flat Primary School49 Main Rd · 08 83830143 Common questionsWhat is the postcode for Mclaren Flat?Mclaren Flat, SA has the postcode 5171.What state is Mclaren Flat in?Mclaren Flat is in South Australia (SA).Does postcode 5171 cover more than one suburb?Yes. Postcode 5171 covers 5 localities, so the postcode alone does not identify Mclaren Flat. Browse other postcodes in South Australia, or widen the search to every Australian postcode.