douglas postcode qld Home ›› Postcode Finder ›› QLD ›› Douglas Douglas local listingsThe suburb of Douglas is located in QLD and has a postcode of 4814. Free douglas business listing! 1Australian Technical CollegeDiscovery Rd 07 477921992BPM Carpet Cleaning Townsville10 Arana Cl 0742434845 View more business listings in douglas Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.