Which has higher average age of mothers at childbirth, China or Guam?

Guam, at 29.05 years against 29.02 years in China as of 2023.

How many years of comparable data are there for China and Guam?

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.

China vs Guam: Average age of mothers at childbirth

China

29.02 years

in 2023

Guam

29.05 years

in 2023

China rank

134th

Guam rank

131st

Average age of mothers at childbirth over time

China
Guam

How they compare

Guam currently reports 29.05 years against 29.02 years in China, a difference of 0.03 years.

The two have swapped places 1 time across 74 shared years of data; in 1950 it was China ahead.

China ranks 134th and Guam ranks 131st of 236 countries.

Across the 8 decades both report, China averaged higher in 3 and Guam in 5.

Head to head by decade

Decade	China	Guam	Difference	Ahead
1950s	29.89 years	28.66 years	1.23 years	China
1960s	30.15 years	28.64 years	1.52 years	China
1970s	29.29 years	27.5 years	1.79 years	China
1980s	26.79 years	26.84 years	0.0447 years	Guam
1990s	25.83 years	27.16 years	1.32 years	Guam
2000s	26.79 years	27.41 years	0.6263 years	Guam
2010s	27.99 years	28.51 years	0.521 years	Guam
2020s	28.97 years	29.03 years	0.0682 years	Guam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, China or Guam?: Guam, at 29.05 years against 29.02 years in China as of 2023.
What is the difference in average age of mothers at childbirth between China and Guam?: 0.03 years, with Guam ahead.
How many years of comparable data are there for China and Guam?: 74 years are reported by both, from 1950 to 2023.
How do China and Guam rank globally for average age of mothers at childbirth?: China ranks 134th and Guam ranks 131st 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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China vs Guam: 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 12 October 2026, from https://reference.statizoid.com/compare/period-average-age-of-mothers/china/guam/

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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: 09 October 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.