Rototuna is a suburb in northern Hamilton, New Zealand, east of Flagstaff. It is one of the newest and fastest-growing suburbs in Hamilton, along with neighbouring Huntington and Flagstaff. Sometimes the name Rototuna is used to collectively refer to all of the city north of Wairere Drive and east of the Waikato River, including Flagstaff, St Petersburg, Magellan Rise, …Rototuna is a suburb in northern Hamilton, New Zealand, east of Flagstaff. It is one of the newest and fastest-growing suburbs in Hamilton, along with neighbouring Huntington and Flagstaff. Sometimes the name Rototuna is used to collectively refer to all of the city north of Wairere Drive and east of the Waikato River, including Flagstaff, St Petersburg, Magellan Rise, Ashmore, Somerset Heights, St James, Callum Brae and Huntington.