Home Postcode finder SA Brooker Brooker postcode SA Brooker is a locality in South Australia covered by postcode 5607. Postcode 5607 State or territory South Australia (SA) Region SA Outer Suburbs Add a free Brooker business listing Be the first listing in Brooker Common questionsWhat is the postcode for Brooker?Brooker, SA has the postcode 5607.What state is Brooker in?Brooker is in South Australia (SA).Does postcode 5607 cover more than one suburb?Yes. Postcode 5607 covers 50 localities, so the postcode alone does not identify Brooker. Browse other postcodes in South Australia, or widen the search to every Australian postcode.