Home Postcode finder NSW Jennings Jennings postcode NSW Jennings is a locality in New South Wales covered by postcode 4383. Postcode 4383 State or territory New South Wales (NSW) Region Toowoomba Region Add a free Jennings business listing Be the first listing in Jennings Common questionsWhat is the postcode for Jennings?Jennings, NSW has the postcode 4383.What state is Jennings in?Jennings is in New South Wales (NSW).Does postcode 4383 cover more than one suburb?Yes. Postcode 4383 covers 2 localities, so the postcode alone does not identify Jennings. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.