westbrook postcode qld Home ›› Postcode Finder ›› QLD ›› Westbrook Westbrook local listingsThe suburb of Westbrook is located in QLD and has a postcode of 4350. Free westbrook business listing! 1Bunker's Hill State SchoolLot 137 Bunkers Hill School Rd 07 46306290 View more business listings in westbrook Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.