cumnock postcode nswdl Home ›› Postcode Finder ›› NSWDL ›› Cumnock Cumnock local listingsThe suburb of Cumnock is located in NSW and has a postcode of 2867. Free cumnock business listing! 1Cumnock Public SchoolRailway Pde 02 63677207 View more business listings in cumnock Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.