Which has higher average age of mothers at childbirth, French Guiana or Mongolia?

Mongolia, at 29.33 years against 29.33 years in French Guiana as of 2023.

How many years of comparable data are there for French Guiana and Mongolia?

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.

French Guiana vs Mongolia: Average age of mothers at childbirth

French Guiana

29.33 years

in 2023

Mongolia

29.33 years

in 2023

French Guiana rank

104th

Mongolia rank

103rd

Average age of mothers at childbirth over time

French Guiana
Mongolia

How they compare

Mongolia currently reports 29.33 years against 29.33 years in French Guiana, a difference of 0 years.

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

French Guiana ranks 104th and Mongolia ranks 103rd of 236 countries.

Mongolia has averaged higher in every one of the 8 decades both report.

Head to head by decade

Decade	French Guiana	Mongolia	Difference	Ahead
1950s	28.46 years	30.55 years	2.09 years	Mongolia
1960s	28.43 years	30.58 years	2.15 years	Mongolia
1970s	27.25 years	30.62 years	3.37 years	Mongolia
1980s	27.15 years	29.84 years	2.69 years	Mongolia
1990s	27.26 years	27.99 years	0.7272 years	Mongolia
2000s	27.99 years	28.11 years	0.124 years	Mongolia
2010s	28.64 years	28.84 years	0.1977 years	Mongolia
2020s	29.37 years	29.38 years	0.017 years	Mongolia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, French Guiana or Mongolia?: Mongolia, at 29.33 years against 29.33 years in French Guiana as of 2023.
What is the difference in average age of mothers at childbirth between French Guiana and Mongolia?: 0 years, with Mongolia ahead.
How many years of comparable data are there for French Guiana and Mongolia?: 74 years are reported by both, from 1950 to 2023.
How do French Guiana and Mongolia rank globally for average age of mothers at childbirth?: French Guiana ranks 104th and Mongolia ranks 103rd 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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French Guiana vs Mongolia: 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 06 October 2026, from https://reference.statizoid.com/compare/period-average-age-of-mothers/french-guiana/mongolia/

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<a href="https://reference.statizoid.com/compare/period-average-age-of-mothers/french-guiana/mongolia/">French Guiana vs Mongolia: 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: 18 September 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.