Which has higher average age of mothers at childbirth, Guam or Northern Mariana Islands?

Northern Mariana Islands, at 29.05 years against 29.05 years in Guam as of 2023.

What is the difference in average age of mothers at childbirth between Guam and Northern Mariana Islands?

0 years, with Northern Mariana Islands ahead.

How many years of comparable data are there for Guam and Northern Mariana Islands?

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.

Guam vs Northern Mariana Islands: Average age of mothers at childbirth

Guam

29.05 years

in 2023

Northern Mariana Islands

29.05 years

in 2023

Guam rank

131st

Northern Mariana Islands rank

130th

Average age of mothers at childbirth over time

Guam
Northern Mariana Islands

How they compare

Northern Mariana Islands currently reports 29.05 years against 29.05 years in Guam, a difference of 0 years.

The two have swapped places 4 times across 74 shared years of data; in 1950 it was Northern Mariana Islands ahead.

Guam ranks 131st and Northern Mariana Islands ranks 130th of 236 countries.

Across the 8 decades both report, Guam averaged higher in 1 and Northern Mariana Islands in 7.

Head to head by decade

Decade	Guam	Northern Mariana Islands	Difference	Ahead
1950s	28.66 years	29.48 years	0.8251 years	Northern Mariana Islands
1960s	28.64 years	29.35 years	0.7186 years	Northern Mariana Islands
1970s	27.5 years	28.68 years	1.19 years	Northern Mariana Islands
1980s	26.84 years	27.9 years	1.07 years	Northern Mariana Islands
1990s	27.16 years	27.38 years	0.2238 years	Northern Mariana Islands
2000s	27.41 years	27.81 years	0.3938 years	Northern Mariana Islands
2010s	28.51 years	28.77 years	0.2552 years	Northern Mariana Islands
2020s	29.03 years	29.03 years	0.004 years	Guam

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, Guam or Northern Mariana Islands?: Northern Mariana Islands, at 29.05 years against 29.05 years in Guam as of 2023.
What is the difference in average age of mothers at childbirth between Guam and Northern Mariana Islands?: 0 years, with Northern Mariana Islands ahead.
How many years of comparable data are there for Guam and Northern Mariana Islands?: 74 years are reported by both, from 1950 to 2023.
How do Guam and Northern Mariana Islands rank globally for average age of mothers at childbirth?: Guam ranks 131st and Northern Mariana Islands ranks 130th 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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Guam vs Northern Mariana Islands: 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 30 August 2026, from https://reference.statizoid.com/compare/period-average-age-of-mothers/guam/northern-mariana-islands/

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<a href="https://reference.statizoid.com/compare/period-average-age-of-mothers/guam/northern-mariana-islands/">Guam vs Northern Mariana Islands: 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.