Official population figures from the end of June show that 77% of New Zealanders live in the North Island.
That means that 3.67 million people live on the North Island of New Zealand.
The North Island’s population grew at a rate of 2.2 percent, slightly faster than the national average of 2.1 percent.
Stats NZ said there were now 18 people per square kilometre, compared with 13 in 1991.
There is considerable variation at the local level though, with 18,000 people per square kilometre in central Auckland.
Half of New Zealand’s population lives north of Rotorua.