mummulgum postcode nswst Home ›› Postcode Finder ›› NSWST ›› Mummulgum Mummulgum local listingsThe suburb of Mummulgum is located in NSW and has a postcode of 2469. Free mummulgum business listing! 1Mummulgum Public SchoolBruxner Hwy 02 66647205 View more business listings in mummulgum Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.