| Total NZ by region | Census usually resident population count | | 3,263,300 | 3,373,900 | 3,618,300 | 3,737,280 | 4,027,947 | 4,242,048 | 4,699,755 |
| Estimated resident population | | .. | .. | 3,732,000 | 3,880,500 | 4,184,600 | 4,442,100 | 4,900,600 |
Natural increase | | 124,400 | 151,100 | 156,400 | 147,300 | 143,300 | 232,200 | 140,500 |
| Net migration | | -4,430 | -40,450 | 88,000 | 1,200 | 160,800 | 25,300 | 318,100 |
| Population change | | 120,000 | 110,600 | 244,400 | 148,500 | 304,100 | 257,500 | 458,500 |
| Total NZ by territorial authority | Census usually resident population count | | 3,263,300 | 3,373,900 | 3,618,300 | 3,737,280 | 4,027,947 | 4,242,048 | 4,699,755 |
| Estimated resident population | | .. | .. | 3,732,000 | 3,880,500 | 4,184,600 | 4,442,100 | 4,900,600 |
| Natural increase | | 124,400 | 151,100 | 156,400 | 147,300 | 143,300 | 232,200 | 140,500 |
| Net migration | | -4,430 | -40,450 | 88,000 | 1,200 | 160,800 | 25,300 | 318,100 |
| Population change | | 120,000 | 110,600 | 244,400 | 148,500 | 304,100 | 257,500 | 458,500 |