allenstown postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Allenstown Allenstown local listingsThe suburb of Allenstown is located in QLD and has a postcode of 4700. Free allenstown business listing! 1Beautopia Hair & Beauty Rockhampton42 Gladstone Rd, Rockhampton QLD 4700 (07) 4927 7200 View more business listings in allenstown Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.