blue-knob postcode nswst Home ›› Postcode Finder ›› NSWST ›› Blue-Knob Blue Knob local listingsThe suburb of Blue Knob is located in NSW and has a postcode of 2480. Free blue knob business listing! Get the first free listing in blue knob! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.