New Zealand is an archipelago located in Oceania, southeast of Australia. The 2 main islands are North Island (Te Ika a Maui) and South Island (Pounamu), with some near on-shore islands and smaller outlying islands including Chatham Islands, Kermadec Islands, and Auckland Islands.making it about the size of the state of Colorado, with a coastline of 15,134 kilometers (9,404 miles). The capital, Wellington, is located at the south end of North Island