koumala postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Koumala Koumala local listingsThe suburb of Koumala is located in QLD and has a postcode of 4738. Free koumala business listing! 1Koumala State School10 Bull St 07 49498111 View more business listings in koumala Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.