Karuah is a locality in both the Port Stephens and Mid-Coast Councils, the Port Stephens lga side is part the Hunter Region while the Mid-Coas…Karuah is a locality in both the Port Stephens and Mid-Coast Councils, the Port Stephens lga side is part the Hunter Region while the Mid-Coast lga is in the Mid North Coast region of New South Wales, Australia. It is thought that the name means 'native plum tree' in the local Aboriginal dialect.