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 the region lies within the Taupo Volcanic Zone, which extends from the centre of the North Island northwards to Whakaari/White Island. Volcanic mountains and lakes, geothermal areas and geological fault lines all dot the landscape. The geothermal region around Rotorua is a major tourist site, while many hot springs in the region are used as swimming areas. The geothermal field near Kawerau is the site of a geothermal power plant that will reportedly meet up to one third of residential and industrial electricity demand in the Eastern Bay of Plenty. Whakaari/White Island, the site of a former sulfur-mining operation, is