ipswich postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Ipswich Ipswich local listingsThe suburb of Ipswich is located in QLD and has a postcode of 4305. Free ipswich business listing! 1Claremont Special School136a Robertson Rd 07 381353332Ipswich Girls Grammar SchoolChermside Rd 07 345444473Ipswich Grammar SchoolCnr Burnett & Darling Sts 07 32801300 View more business listings in ipswich Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.