Subnational population estimates give the best available measure of the size and age-sex composition of New Zealand's 16 regional council areas (regions) and 67 territorial authority areas, on an annual basis.
In the June 2013 year the estimates indicate:
- 13 of New Zealand's 16 regions experienced population growth.
- Auckland region had the largest percentage growth (1.4 percent) followed by Canterbury (1.3 percent).
- Auckland region accounted for 57 percent of New Zealand's total population growth; Canterbury's growth accounted for 19 percent.
- 39 of the 67 territorial authority areas had population growth.
- The five fastest-growing territorial authority areas were in the South Island.
- Christchurch city's population increased during 2013, following two years of decline.