maryborough postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Maryborough Maryborough local listingsThe suburb of Maryborough is located in QLD and has a postcode of 4650. Free maryborough business listing! 1St Mary's College51 Lennox St 07 412126502Maryborough State High School510-528 Kent St 07 412093333Maryborough Special School164 Woodstock St 07 41208777 View more business listings in maryborough Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.