Bay of Plenty Census, the total resident population of the Bay of Plenty region was 257,379, an increase of 7.5% from 2001. The Bay of Plenty is the fifth-most populous region in New Zealand, accounting for 6.4% of the national population. The regional population is projected to increase to 277,900 by the year 2011. The median age in the Bay of Plenty was 37.2 years; 23.0% of the population were under 15 years of age, while 14.8% of people were aged 65 years or over. The male-to-female ratio was 0.94. The coast is dotted with several sizable settlements, the largest of which is
Bay of Plenty Public Health. The Bay of Plenty region covers 12,200 km² of land and 9,500 km² of coastal marine area. It extends along the eastern coast of the North Island, from the base of the Coromandel Peninsula in the west to Cape Runaway in the east. The region extends 12 nautical miles from the mainland coastline, and also extends from the coastlines of several islands in the bay, notably Mayor Island/Tuhua, Motiti Island, Whale Island and the active volcano of Whakaari/White Island. It extends inland to the sparsely populated forest lands around Rotorua and Murupara. The geographical bay is defined by