Home Postcode finder WA Carlotta Carlotta postcode WA Carlotta is a locality in Western Australia covered by postcode 6275. Postcode 6275 State or territory Western Australia (WA) Region Wa Subs 3 Sth Rd Add a free Carlotta business listing Be the first listing in Carlotta Common questionsWhat is the postcode for Carlotta?Carlotta, WA has the postcode 6275.What state is Carlotta in?Carlotta is in Western Australia (WA).Does postcode 6275 cover more than one suburb?Yes. Postcode 6275 covers 10 localities, so the postcode alone does not identify Carlotta. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.