Home Postcodes by state NSW 2337 Postcode 2337 2337 is the postcode for 25 localities in NSW: Belltrees, Brawboy, Bunnan, Dry Creek, Ellerston, Glenbawn and 19 more. Localities with postcode 2337BelltreesNSWBrawboyNSWBunnanNSWDry CreekNSWEllerstonNSWGlenbawnNSWGlenrockNSWGundyNSWKars SpringsNSWMiddle BrookNSWMoobiNSWMoonan BrookNSWMoonan FlatNSWMurullaNSWOmadaleNSWOwens GapNSWPages CreekNSWParkvilleNSWSconeNSWSegenhoeNSWStewarts BrookNSWTomallaNSWWaverlyNSWWingenNSWWooloomaNSW Postcode 2337 State or territory New South Wales (NSW) Localities 25 Council area Upper Hunter Council area based on Australian Bureau of Statistics data (ASGS Edition 3), CC BY 4.0. Postcode 2336 · Postcode 2338