New Zealand’s population is changing in ways that will shape almost every part of life over the coming decades. People are living longer, and families are having fewer children than needed to maintain our population. Our rural towns and communities are shrinking. Our future workforce will face labour shortages as older workers retire. Growing and changing demand is putting pressure on housing, healthcare and infrastructure too. A new report from Koi Tū: The Centre for Informed Futures argues that these trends are not a distant issue for future generations. They are affecting New Zealand now.

The report, People, place and prosperity: The case for a population strategy, calls for a more coordinated and long-term approach to planning for demographic change. We spoke with two of the report’s authors, Koi Tū Fellow Georgia Lala, and Senior Fellow Distinguished Professor Emeritus Paul Spoonley, about the report and the changes reshaping New Zealand. In this first article, we look at why the report argues New Zealand needs a more coordinated and long-term approach to population change — and why planning for longer lives matters.

A different New Zealand

Professor Paul Spoonley says many of New Zealand’s current systems were developed during a very different period in the country’s history.

“The policies that we currently have were built during a major demographic dividend,” he says.

For decades, New Zealand benefited from strong population growth and the benefits from a large demographic cohort, the Baby Boomers. 

At the time, New Zealand had a large working-age population as result. The post-war baby boom helped drive economic growth, expand the labour force, and support investment in public services and infrastructure. But the population profile that shaped those systems is changing. People are living longer than previous generations. Birth rates have fallen rapidly.

“Policies of the past are no longer going to work for this new demography,” Professor Spoonley says.

He says the challenge now is not whether demographic change is happening, but whether New Zealand adapts to it.

“The report is really to invite all of us, including decision-makers, to think more proactively and strategically about the future.”

One of the report’s key messages is that demographic change affects far more than population numbers alone. It shapes how communities grow, how services are delivered, and how New Zealand plans for the future.

“Population change affects every generation differently, so planning for it needs to happen across government, communities and sectors rather than in isolation,” says Georgia Lala.

She says this is why the report aims to encourage a broader conversation about how New Zealand prepares for long-term change.

Moving beyond “crisis” language

Public conversations about ageing populations often focus on pressure, cost and decline. But Professor Spoonley says that this framing misses the bigger picture.

“It’s not necessarily a deficit at this point. It’s how we respond to the demographic changes.”

The report argues that population ageing should not be viewed in isolation. It is happening alongside other major demographic shifts, including declining fertility, changing migration patterns, and regional population change. Together, these trends are already reshaping communities, labour markets and public services across the country.

The report also challenges the idea that an ageing population is exclusively a bad thing.

Older New Zealanders already make major contributions through paid work, volunteering, caregiving and community leadership. Many continue working well beyond traditional retirement ages. The report argues that longer lives can create opportunities as well as challenges, but only if policy and planning keep pace.
Population change is not happening evenly

One of the report’s strongest themes is that demographic change is affecting different parts of New Zealand in very different ways.

“Auckland, Hamilton and Christchurch are major growth centres at the moment,” Professor Spoonley says.

“But much of New Zealand is either experiencing population stagnation or population decline.”

This creates very different pressures for local communities and councils.

Some areas are seeing rapid growth and increasing infrastructure demand. Others are managing ageing populations with a shrinking workforce and slower economic growth.

The report notes that some parts of regional New Zealand are already experiencing what Professor Spoonley describes as “hyper-ageing”, with many expected to vastly exceed the standard definition of 30% plus in the over 65 age group by 2048.

That has implications for everything from healthcare and housing to transport, workforce availability, local services and infrastructure funding.
But Professor Spoonley says the picture is more complex than simple decline.

“Some communities are doing a really good job at maintaining social services and infrastructure and looking after older people,” he says, pointing to places like Ashburton, where local planning and strong community networks have helped communities adapt to demographic change.
Communities like Ashburton have also found ways to attract healthcare workers, support local services and maintain strong community networks despite demographic pressures.

Why planning matters

Unlike many policy challenges, demographic change does not happen suddenly. The trends shaping New Zealand’s future — longer lives, lower birth rates and changing migration patterns — have been building for decades and are already visible in communities across the country.'

“We know what’s going to happen in the next 10 years — and possibly 20 years,” Professor Spoonley says.

That creates an opportunity for governments, councils, businesses and communities to plan ahead rather than react after problems emerge.
The report argues New Zealand needs a more joined-up approach to long-term population planning — one that connects housing, transport, healthcare, infrastructure and workforce planning to the realities of an ageing population and longer lives.

While some local authorities and organisations are engaging deeply with demographic data and future planning, others are less prepared.

“There’s a real issue around councils being prepared to get good evidence about what the community will look like in 10 years,” he says.

Without that evidence, there is a risk that decisions about housing, infrastructure and public services may not reflect future population realities.
A conversation about the future

At its core, the Koi Tū report is a call for New Zealand to take a more strategic and long-term approach to demographic change. The report argues that demographic change is not something happening to other countries or future generations. It is already shaping New Zealand now.Housing pressures, healthcare demand, transport planning and regional change are all connected to population trends already underway.

Lala says many of these changes are already visible across New Zealand.

“The demographic changes outlined in the report are already visible in many communities,” she says. “The challenge is making sure planning and decision-making keep pace with that reality.”

Professor Spoonley says the challenge is not simply responding to ageing but recognising how population change affects the country as a whole.
“The report is really to invite all of us to think more proactively and strategically about the future.”

In the next article in this series, we look at what demographic change means for New Zealand’s workforce — and why older workers are becoming increasingly important to the country’s future.