southbrook postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Southbrook Southbrook local listingsThe suburb of Southbrook is located in QLD and has a postcode of 4363. Free southbrook business listing! 1Southbrook Central State School1 School Rd 07 46910142 View more business listings in southbrook Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.