Home Postcode finder NSWDL Illaroo Illaroo postcode NSWDL Illaroo is a locality in New South Wales covered by postcode 2540. Postcode 2540 State or territory New South Wales (NSWDL) Region NSW Country West Add a free Illaroo business listing Be the first listing in Illaroo Common questionsWhat is the postcode for Illaroo?Illaroo, NSWDL has the postcode 2540.What state is Illaroo in?Illaroo is in New South Wales (NSWDL).Does postcode 2540 cover more than one suburb?Yes. Postcode 2540 covers 68 localities, so the postcode alone does not identify Illaroo. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.