coominya postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Coominya Coominya local listingsThe suburb of Coominya is located in QLD and has a postcode of 4311. Free coominya business listing! 1Coominya State SchoolCnr Cornhill & Main St 07 54265111 View more business listings in coominya Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.