What is the difference in average age of mothers at childbirth between New Zealand and Saint Helena?

0.04 years, with New Zealand ahead.

How many years of comparable data are there for New Zealand and Saint Helena?

74 years are reported by both, from 1950 to 2023.

Where does this data come from?

Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as Average age of mothers at childbirth. Statizoid refreshes it automatically from the source and publishes the full history for both places.

New Zealand vs Saint Helena: Average age of mothers at childbirth

New Zealand

30.64 years

in 2023

Saint Helena

30.6 years

in 2023

New Zealand rank

54th

Saint Helena rank

55th

Average age of mothers at childbirth over time

New Zealand
Saint Helena

How they compare

New Zealand currently reports 30.64 years against 30.6 years in Saint Helena, a difference of 0.04 years.

The two have swapped places 6 times across 74 shared years of data; in 1950 it was New Zealand ahead.

New Zealand ranks 54th and Saint Helena ranks 55th of 236 countries.

Across the 8 decades both report, New Zealand averaged higher in 5 and Saint Helena in 3.

Head to head by decade

Decade	New Zealand	Saint Helena	Difference	Ahead
1950s	28 years	27.91 years	0.0894 years	New Zealand
1960s	27.2 years	27.35 years	0.1447 years	Saint Helena
1970s	26.3 years	26.84 years	0.5414 years	Saint Helena
1980s	27.02 years	27.26 years	0.2362 years	Saint Helena
1990s	28.32 years	28.03 years	0.2992 years	New Zealand
2000s	29.35 years	29 years	0.3418 years	New Zealand
2010s	30.08 years	30.06 years	0.0275 years	New Zealand
2020s	30.62 years	30.56 years	0.0585 years	New Zealand

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, New Zealand or Saint Helena?: New Zealand, at 30.64 years against 30.6 years in Saint Helena as of 2023.
What is the difference in average age of mothers at childbirth between New Zealand and Saint Helena?: 0.04 years, with New Zealand ahead.
How many years of comparable data are there for New Zealand and Saint Helena?: 74 years are reported by both, from 1950 to 2023.
How do New Zealand and Saint Helena rank globally for average age of mothers at childbirth?: New Zealand ranks 54th and Saint Helena ranks 55th of 236 countries.
Where does this data come from?: Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data, published as Average age of mothers at childbirth. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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New Zealand vs Saint Helena: Average age of mothers at childbirth. Statizoid, drawing on Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data. Retrieved 01 September 2026, from https://reference.statizoid.com/compare/period-average-age-of-mothers/new-zealand/saint-helena/

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<a href="https://reference.statizoid.com/compare/period-average-age-of-mothers/new-zealand/saint-helena/">New Zealand vs Saint Helena: Average age of mothers at childbirth</a> — Statizoid

About this data

Indicator: Average age of mothers at childbirth
Unit: years
Source: Human Fertility Database (2025); UN, World Population Prospects (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 236 places, 17,683 data points, 1891–2023
Last refreshed: 28 August 2026

Mean age of mothers at the birth of their children if women were subject throughout their lives to the age-specific fertility rates observed in a given year.