What Is Happening to Birth Trends in New Zealand?
New Zealand is experiencing a major shift in when women choose to have children. New data released by Stats NZ shows that births to women under the age of 25 have fallen to their lowest level on record.
In 2025, only 14% of babies in New Zealand were born to mothers under 25, meaning roughly 1 in every 7 births involved younger mothers.
This is a dramatic change compared with previous generations. In 1995, 28% of births were to mothers under 25, while in 1965 the figure was as high as 46 percent.
Despite these shifts in age patterns, the total number of births has remained relatively stable over decades. There were 57,705 live births registered in 2025, which is almost identical to the 57,672 births recorded in 1995 and only slightly lower than the 60,045 births in 1965.
What Is Causing Fewer Women Under 25 to Have Babies?
One of the key reasons is that women are choosing to delay motherhood. According to the data, the median age of mothers giving birth reached a record high of 31.7 years in 2025. This shows a steady rise over time, from 28.6 years in 1995 and 25.5 years in 1965.
Many women today are focusing on education, careers, financial stability, and housing security before starting families.
Longer periods of study and later marriage or partnerships also contribute to people having children later in life.
As a result, while younger motherhood is declining, births to older mothers are becoming more common.
What Is the Rise of Older Mothers?
At the same time that births to younger mothers are falling, the proportion of women having children at age 35 or older has doubled.
In 1995, only 13% of births were to mothers aged 35 and above. By 2025, that figure had climbed to 26 percent, meaning more than 1 in 4 births now involve older mothers.
Advances in fertility treatments and medical care also make it safer for women to have children later than in previous generations.
What Is Happening Across Different Regions?
The decline in births to young mothers is not limited to one part of the country. According to Stats NZ, every region in New Zealand has seen a decrease in the share of births to mothers under 25 between 1995 and 2025.
However, some regions still have higher proportions of younger mothers than others.
- Gisborne recorded the highest share in 2025, with about 25% of births to mothers under 25.
- Otago had the lowest proportion, with just 8% of births to younger mothers.
Researchers note that regional factors such as population age structure, education levels, and economic opportunities can influence when women choose to start families.
For example, regions with larger student populations, such as Otago, often have fewer young mothers because many women are focused on higher education.
What Does This Mean for the Future?
The data signals a significant generational change in family patterns across New Zealand.
With more women delaying motherhood, the country could see wider impacts on population growth, workforce dynamics, and long-term demographics. Governments and policymakers often monitor such trends closely because they affect education planning, healthcare services, and economic forecasts.
At the same time, the shift also reflects changing lifestyles and priorities, where people are increasingly planning families around personal goals, careers, and financial readiness.
Shahriena Shukri is a journalist covering business and economic news in Malaysia, providing insights on market trends, corporate developments, and financial policies. More about Shahriena Shukri
