Home Postcode finder NSW Monia Gap Monia Gap postcode NSW Monia Gap is a locality in New South Wales covered by postcode 2675. Postcode 2675 State or territory New South Wales (NSW) Region Canberra Add a free Monia Gap business listing Be the first listing in Monia Gap Common questionsWhat is the postcode for Monia Gap?Monia Gap, NSW has the postcode 2675.What state is Monia Gap in?Monia Gap is in New South Wales (NSW).Does postcode 2675 cover more than one suburb?Yes. Postcode 2675 covers 5 localities, so the postcode alone does not identify Monia Gap. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.