harlaxton postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Harlaxton Harlaxton local listingsThe suburb of Harlaxton is located in QLD and has a postcode of 4350. Free harlaxton business listing! 1Harlaxton State School112 Ruthven St 07 463255002King Arthur Handyman & Pest Control Services75 Ruthven St, Harlaxton QLD 4350, Australia 0417 739 897 View more business listings in harlaxton Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.