merriwagga postcode nswst Home ›› Postcode Finder ›› NSWST ›› Merriwagga Merriwagga local listingsThe suburb of Merriwagga is located in NSW and has a postcode of 2652. Free merriwagga business listing! Get the first free listing in merriwagga! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.