Home Postcode finder QLD The Summit The Summit postcode QLD The Summit is a locality in Queensland covered by postcode 4377. Postcode 4377 State or territory Queensland (QLD) Region Toowoomba Region Add a free The Summit business listing More business listings in The Summit Businesses in The SummitThe Summit State School34 Taggart Rd · 07 46832333 Common questionsWhat is the postcode for The Summit?The Summit, QLD has the postcode 4377.What state is The Summit in?The Summit is in Queensland (QLD).Does postcode 4377 cover more than one suburb?Yes. Postcode 4377 covers 3 localities, so the postcode alone does not identify The Summit. It also appears in 2 states or territories, so it does not identify a state either. Browse other postcodes in Queensland, or widen the search to every Australian postcode.