Home Postcode finder WA Neergabby Neergabby postcode WA Neergabby is a locality in Western Australia covered by postcode 6503. Postcode 6503 State or territory Western Australia (WA) Region Wa Subs 4 Coast Add a free Neergabby business listing Be the first listing in Neergabby Common questionsWhat is the postcode for Neergabby?Neergabby, WA has the postcode 6503.What state is Neergabby in?Neergabby is in Western Australia (WA).Does postcode 6503 cover more than one suburb?Yes. Postcode 6503 covers 20 localities, so the postcode alone does not identify Neergabby. Browse other postcodes in Western Australia, or widen the search to every Australian postcode.