 Total New Zealand by regional council/constituency | | 4,900,600 | 4,979,200 | 5,090,200 | 5,122,600 |
| Northland region | | 185,800 | 189,100 | 194,300 | 197,900 |
| Auckland region | | 1,654,800 | 1,681,300 | 1,716,900 | 1,715,600 |
| Waikato region | | 475,600 | 485,700 | 499,300 | 506,000 |
| Bay of Plenty region | | 320,800 | 328,200 | 338,400 | 343,400 |
| Gisborne region | | 49,500 | 50,200 | 51,100 | 51,500 |
| Hawke's Bay region | | 172,400 | 174,900 | 179,700 | 181,500 |
| Taranaki region | | 121,200 | 123,100 | 125,200 | 126,400 |
| Manawatu-Whanganui region | | 247,500 | 250,600 | 254,500 | 256,500 |
| Wellington region | | 525,900 | 532,600 | 543,000 | 547,000 |
| Tasman region | | 54,000 | 54,900 | 57,000 | 57,900 |
| Nelson region | | 52,700 | 53,400 | 54,700 | 54,700 |
| Marlborough region | | 48,700 | 49,300 | 51,000 | 51,500 |
| West Coast region | | 32,400 | 32,500 | 32,800 | 32,700 |
| Canterbury region | | 622,800 | 631,700 | 644,100 | 649,800 |
| Otago region | | 235,000 | 239,400 | 244,600 | 246,700 |
| Southland region | | 100,500 | 101,600 | 102,800 | 102,700 |
| Area outside region | | 690 | 710 | 750 | 780 |
| Total, North Island regions | | 3,753,700 | 3,815,700 | 3,902,500 | 3,925,800 |
| Total, South Island regions | | 1,146,200 | 1,162,800 | 1,187,000 | 1,196,000 |