New Zealand reached about 5.34 million people by the end of 2025, but the growth has cooled sharply: in the year to June 2025 the country expanded just 0.7 percent, down from 1.7 the year before, and for the first time in over a decade more of that came from babies than from new arrivals. The people still moving, though, keep choosing the same kinds of places. Not whole cities or council areas, but specific suburbs, almost all of them new subdivisions on the edges of town and a handful of lifestyle spots in the south. This is a ranking of those suburbs. It matters that we say suburbs and mean it, because most coverage of this data quietly swaps in council areas, and the two are not the same thing.
Suburb, district or local board? A 30-second clarifier
Here is the distinction that trips up almost every "fastest-growing" headline. Stats NZ reports growth at several levels, and they tell completely different stories.
A district (a territorial authority, like Selwyn or Queenstown-Lakes) can grow a steady 2.4 percent while a single suburb inside it, say Rolleston, grows two or three times faster, because the district average is dragged down by its established, full-up areas. An Auckland local board (Papakura, Howick, Waiheke) is bigger than a suburb and smaller than a city, and is also not a suburb. A suburb, in the data, is a statistical area (an SA2): the actual neighbourhood you would name. When you rank suburbs properly, the leaders are nearly always greenfield builds, and the numbers are far punchier than any district figure. So we keep the three apart.
The fastest-growing suburbs (SA2 level)
This is the ranking that actually answers the question, and it looks nothing like the district one. The suburbs that lead are new-build subdivisions where paddocks became streets inside five years, places that can post double-digit annual growth while the district around them ambles along at 2 percent. The usual front-runners:
- Rolleston and its surrounds, Selwyn, Canterbury, the poster child for the whole phenomenon
- Milldale, Drury and Flat Bush, the Auckland fringe where the city is still spilling outward
- Pegasus and Ravenswood, Waimakariri, Canterbury, two towns that barely existed two decades ago
- Hanley's Farm, Queenstown-Lakes, lifestyle growth with a chairlift view
- Mangawhai and Mangawhai Heads, Kaipara, Northland, a long-running standout that a district ranking hides completely, because Kaipara as a whole is not a fast-growing district
- Te Kauwhata, Waikato, and the Papamoa and eastern Tauranga corridors, Bay of Plenty
Mangawhai is the clearest proof of the point. It has been one of the country's fastest-growing localities for years, yet it never appears in a district-level list, because the district it sits in is unremarkable on paper. Rank by suburb and it leaps up the table. This is the section where suburb.co.nz can out-rank every media outlet, because we hold the data at exactly this level.
The fastest-growing districts
A separate ranking, and a useful one, as long as nobody calls these suburbs.
| District | Region | Growth, year to June 2025 |
|---|---|---|
| Selwyn | Canterbury | +2.4% (fastest district in NZ) |
| Queenstown-Lakes | Otago | +1.7% |
Canterbury was the fastest-growing region overall at about 1.1 percent, which is why two of its districts and several of its suburbs keep appearing.
The fastest-growing Auckland local boards
Bigger than suburbs, smaller than the city, and worth their own list.
| Local board | Growth, year to June 2025 |
|---|---|
| Papakura | +2.6% (fastest area of any kind in NZ) |
| Henderson-Massey | +1.8% |
| Howick | +1.7% |
Papakura topping the national table at the local-board level is real, but remember it is an area of tens of thousands of people. The individual suburbs driving it, out toward Drury and the southern boundary, are growing faster still.
The places quietly shrinking
Not everywhere is filling up. In the year to June 2025 seven cities either lost people or barely moved.
| Area | Type | Change, year to June 2025 |
|---|---|---|
| Waiheke | Auckland local board | -0.9% (steepest fall of any area) |
| Porirua | City | -0.4% |
| Wellington | City | -0.3% |
| Napier | City | -0.3% |
| Nelson | City | -0.3% |
| Upper Hutt | City | -0.2% |
Separately, and more slowly, the country is ageing into a different kind of decline. Sixteen districts now record more deaths than births, among them Kapiti Coast, Thames-Coromandel, Whanganui, Timaru and Dunedin. Several are exactly the places people move to in order to retire, so the pattern is arithmetic rather than alarming: send a district enough retirees and not enough young families, and the natural balance tips. It is the quiet force reshaping small-town New Zealand, and the official projections expect more districts to join the list.
Babies, not arrivals
The slowdown also changed what was driving the growth. For years migration did the heavy lifting; in the year to June 2025 it flipped. Natural increase, births minus deaths, added 21,000 people, while net migration added just 13,700, the first time in over a decade, the strange COVID years aside, that the country grew more from its maternity wards than its airports. Net migration had been near 70,000 only a year earlier. That is the single biggest reason the whole field slowed at once, and why the fast suburbs are the ones full of young families.
The internal reshuffle
Underneath the national figure, New Zealanders swapped places. Auckland lost about 3,200 more people to the rest of the country than it gained, the largest internal outflow anywhere, although it still grew overall thanks to births and international arrivals. Christchurch recorded the biggest net internal gain, around 1,700, and the South Island grew faster than the North. Wellington posted the largest net migration loss of any area. So the accurate one-line version is narrower than the usual claim: on internal movement, people are drifting out of the two biggest cities toward Canterbury and the regions, even though both big cities still grew on paper.
Frequently asked questions
- What is the fastest-growing suburb in New Zealand?
- At the suburb (SA2) level, the leaders are new subdivisions like Rolleston in Selwyn, plus Milldale, Drury and Flat Bush around Auckland, and standouts like Mangawhai in Northland. These can grow at double-digit rates, far faster than any district. Our suburb table ranks them directly from the SA2 estimates.
- Isn't Papakura the fastest-growing place?
- Papakura is the fastest-growing Auckland local board, at 2.6 percent in the year to June 2025, and Selwyn is the fastest district at 2.4 percent. But a local board and a district are both much larger than a suburb. The fastest individual suburbs grow quicker than either.
- Why does a district grow slower than its suburbs?
- Because a district average blends its booming new edges with its full, settled middle. Selwyn district might grow 2.4 percent while Rolleston inside it grows far faster. Ranking by district hides exactly the suburbs people are searching for.
- Which places are shrinking?
- Waiheke had the steepest fall of any area, and the cities of Porirua, Wellington, Napier, Nelson and Upper Hutt all lost people or stood still. Separately, sixteen districts now record more deaths than births as the population ages.
- Are people really leaving Auckland and Wellington?
- On internal migration, yes: both lost more people to the rest of the country than they gained, with Christchurch the biggest beneficiary. But both still grew overall, because births and international arrivals more than filled the gap. The exodus is real only in the internal-migration column.
- How current is this, and how is it measured?
- The national population was about 5.34 million at the end of 2025. Suburb figures come from Stats NZ population estimates at SA2 level, updated annually, latest at 30 June 2025. We always say whether a figure is a single-year change or growth since the 2018 Census.
Methodology
We rank three different things and keep them clearly separate: suburbs (statistical areas, SA2), territorial authorities (districts and cities), and Auckland local boards. All figures are Stats NZ population estimates, with the latest subnational release at 30 June 2025 and the national total at 31 December 2025. SA2 estimates carry more uncertainty than larger areas, because a single new subdivision can swing a small suburb's numbers, so we show both the latest-year change and the longer trend since 2018 and flag any suburb distorted by a one-off development.