Home Postcode finder NSW Colly Blue Colly Blue postcode NSW Colly Blue is a locality in New South Wales covered by postcode 2343. Postcode 2343 State or territory New South Wales (NSW) Region NSW North Coast Add a free Colly Blue business listing Be the first listing in Colly Blue Common questionsWhat is the postcode for Colly Blue?Colly Blue, NSW has the postcode 2343.What state is Colly Blue in?Colly Blue is in New South Wales (NSW).Does postcode 2343 cover more than one suburb?Yes. Postcode 2343 covers 15 localities, so the postcode alone does not identify Colly Blue. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.