Home Postcode finder QLD Avondale Avondale postcode QLD Avondale is a locality in Queensland covered by postcode 4670. Postcode 4670 State or territory Queensland (QLD) Region Sunshine Coast Add a free Avondale business listing More business listings in Avondale Businesses in AvondaleAvondale State School371 Avondale Rd · 07 41561202 Common questionsWhat is the postcode for Avondale?Avondale, QLD has the postcode 4670.What state is Avondale in?Avondale is in Queensland (QLD).Does postcode 4670 cover more than one suburb?Yes. Postcode 4670 covers 52 localities, so the postcode alone does not identify Avondale. Browse other postcodes in Queensland, or widen the search to every Australian postcode.