is a suburb of Raumanga in the Northland region in New Zealand . The main campus of Northland Polytechnic is in Whangarei . Raumanga is a suburb of Raumanga in the Northland Region of New Zealand . The main campus of Northland Polytechnic is situated in Whangarei . Raumanga is a suburb of Whangarei in the Northland Region of New Zealand . The main campus of Northland Polytechnic is situated in Raumanga .