 Total New Zealand by regional council/constituency | | 4,900,600 | 4,979,300 | 5,084,300 |
| Northland region | | 185,800 | 189,600 | 194,600 |
| Auckland region | | 1,654,800 | 1,680,500 | 1,717,500 |
| Waikato region | | 475,600 | 485,300 | 496,700 |
| Bay of Plenty region | | 320,800 | 328,200 | 337,300 |
| Gisborne region | | 49,500 | 50,100 | 50,700 |
| Hawke's Bay region | | 172,400 | 175,100 | 178,600 |
| Taranaki region | | 121,200 | 122,800 | 124,600 |
| Manawatu-Whanganui region | | 247,500 | 250,400 | 254,300 |
| Wellington region | | 525,900 | 532,600 | 542,000 |
| Tasman region | | 54,000 | 55,100 | 56,400 |
| Nelson region | | 52,700 | 53,600 | 54,600 |
| Marlborough region | | 48,700 | 49,400 | 50,200 |
| West Coast region | | 32,400 | 32,300 | 32,400 |
| Canterbury region | | 622,800 | 632,300 | 645,900 |
| Otago region | | 235,000 | 239,700 | 245,300 |
| Southland region | | 100,500 | 101,500 | 102,600 |
| Area outside region | | 690 | 720 | 760 |
| Total, North Island regions | | 3,753,700 | 3,814,800 | 3,896,200 |
| Total, South Island regions | | 1,146,200 | 1,163,800 | 1,187,300 |