New Zealand vs Slovenia: Average age of mothers at childbirth
New Zealand
30.64 years
in 2023
Slovenia
30.44 years
in 2023
New Zealand rank
54th
Slovenia rank
58th
Average age of mothers at childbirth over time
- New Zealand
- Slovenia
How they compare
New Zealand currently reports 30.64 years against 30.44 years in Slovenia, a difference of 0.2 years.
The two have swapped places 5 times across 74 shared years of data; in 1950 it was Slovenia ahead.
New Zealand ranks 54th and Slovenia ranks 58th of 236 countries.
Across the 8 decades both report, New Zealand averaged higher in 5 and Slovenia in 3.
Head to head by decade
| Decade | New Zealand | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1950s | 28 years | 29.05 years | 1.06 years | Slovenia |
| 1960s | 27.2 years | 27.34 years | 0.1343 years | Slovenia |
| 1970s | 26.3 years | 25.99 years | 0.3098 years | New Zealand |
| 1980s | 27.02 years | 25.51 years | 1.51 years | New Zealand |
| 1990s | 28.32 years | 26.92 years | 1.4 years | New Zealand |
| 2000s | 29.35 years | 29.19 years | 0.1508 years | New Zealand |
| 2010s | 30.08 years | 30.19 years | 0.1098 years | Slovenia |
| 2020s | 30.62 years | 30.43 years | 0.1902 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 Slovenia?
- New Zealand, at 30.64 years against 30.44 years in Slovenia as of 2023.
- What is the difference in average age of mothers at childbirth between New Zealand and Slovenia?
- 0.2 years, with New Zealand ahead.
- How many years of comparable data are there for New Zealand and Slovenia?
- 74 years are reported by both, from 1950 to 2023.
- How do New Zealand and Slovenia rank globally for average age of mothers at childbirth?
- New Zealand ranks 54th and Slovenia ranks 58th 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.
Individual pages
About this data
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.