leichhardt postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Leichhardt Leichhardt local listingsThe suburb of Leichhardt is located in QLD and has a postcode of 4305. Free leichhardt business listing! 1Leichhardt State School72 Samford Rd 07 381332222Immaculate Heart Primary School24 Old Toowoomba Rd 07 38121077 View more business listings in leichhardt Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.