Moss Vale is a town in the Southern Highlands of New South Wales, Australia, in the Wingecarribee Shire. It is located on the Illawarra Hi…Moss Vale is a town in the Southern Highlands of New South Wales, Australia, in the Wingecarribee Shire. It is located on the Illawarra Highway, which connects to Wollongong and the Illawarra coast via Macquarie Pass.