dundas-valley postcode nswrv Home ›› Postcode Finder ›› NSWRV ›› Dundas-Valley Dundas Valley local listingsThe suburb of Dundas Valley is located in NSW and has a postcode of 2117. Free dundas valley business listing! Get the first free listing in dundas valley! Search and find other Postcodes in New South Wales or widen the search to Postcodes in Australia.