esk postcode qldga Home ›› Postcode Finder ›› QLDGA ›› Esk Esk local listingsThe suburb of Esk is located in QLD and has a postcode of 4312. Free esk business listing! 1Esk State SchoolEast St 07 54244111 View more business listings in esk Search and find other Postcodes in Queensland or widen the search to Postcodes in Australia.