Which has higher average age of mothers at childbirth, Tonga or United States?

Tonga, at 29.95 years against 29.9 years in United States as of 2023.

How many years of comparable data are there for Tonga and United States?

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.

Tonga vs United States: Average age of mothers at childbirth

Tonga

29.95 years

in 2023

United States

29.9 years

in 2023

Tonga rank

83rd

United States rank

86th

Average age of mothers at childbirth over time

Tonga
United States

How they compare

Tonga currently reports 29.95 years against 29.9 years in United States, a difference of 0.05 years.

Across all 74 years both countries report, Tonga has been ahead every year.

Tonga ranks 83rd and United States ranks 86th of 236 countries.

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

Head to head by decade

Decade	Tonga	United States	Difference	Ahead
1950s	30.46 years	26.52 years	3.94 years	Tonga
1960s	30.58 years	26.4 years	4.18 years	Tonga
1970s	30.52 years	25.9 years	4.62 years	Tonga
1980s	30.69 years	26.31 years	4.39 years	Tonga
1990s	30.96 years	26.82 years	4.14 years	Tonga
2000s	30.68 years	27.8 years	2.89 years	Tonga
2010s	30.08 years	29 years	1.08 years	Tonga
2020s	29.94 years	29.82 years	0.123 years	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, Tonga or United States?: Tonga, at 29.95 years against 29.9 years in United States as of 2023.
What is the difference in average age of mothers at childbirth between Tonga and United States?: 0.05 years, with Tonga ahead.
How many years of comparable data are there for Tonga and United States?: 74 years are reported by both, from 1950 to 2023.
How do Tonga and United States rank globally for average age of mothers at childbirth?: Tonga ranks 83rd and United States ranks 86th 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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Tonga vs United States: 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/tonga/united-states/

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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.