Which has higher average age of mothers at childbirth, Guernsey or Jersey?

Jersey, at 30.75 years against 30.7 years in Guernsey as of 2023.

How many years of comparable data are there for Guernsey and Jersey?

74 years are reported by both, from 1950 to 2023.

Where does this data come from?

Human Fertility Database (2026); UN, World Population Prospects (2024) – with major processing 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.

Guernsey vs Jersey: Average age of mothers at childbirth

Guernsey

30.7 years

in 2023

Jersey

30.75 years

in 2023

Guernsey rank

49th

Jersey rank

48th

Average age of mothers at childbirth over time

Guernsey
Jersey

How they compare

Jersey currently reports 30.75 years against 30.7 years in Guernsey, a difference of 0.05 years.

The two have swapped places 8 times across 74 shared years of data; in 1950 it was Jersey ahead.

Guernsey ranks 49th and Jersey ranks 48th of 236 countries.

Across the 8 decades both report, Guernsey averaged higher in 2 and Jersey in 6.

Head to head by decade

Decade	Guernsey	Jersey	Difference	Ahead
1950s	27.93 years	27.92 years	0.0068 years	Guernsey
1960s	27.29 years	27.34 years	0.0444 years	Jersey
1970s	26.73 years	27 years	0.2627 years	Jersey
1980s	27.39 years	27.68 years	0.295 years	Jersey
1990s	28.33 years	28.25 years	0.0793 years	Guernsey
2000s	29.03 years	29.14 years	0.1104 years	Jersey
2010s	30.13 years	30.14 years	0.0097 years	Jersey
2020s	30.69 years	30.73 years	0.0435 years	Jersey

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth, Guernsey or Jersey?: Jersey, at 30.75 years against 30.7 years in Guernsey as of 2023.
What is the difference in average age of mothers at childbirth between Guernsey and Jersey?: 0.05 years, with Jersey ahead.
How many years of comparable data are there for Guernsey and Jersey?: 74 years are reported by both, from 1950 to 2023.
How do Guernsey and Jersey rank globally for average age of mothers at childbirth?: Guernsey ranks 49th and Jersey ranks 48th of 236 countries.
Where does this data come from?: Human Fertility Database (2026); UN, World Population Prospects (2024) – with major processing 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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Guernsey vs Jersey: Average age of mothers at childbirth. Statizoid, drawing on Human Fertility Database (2026); UN, World Population Prospects (2024) – with major processing by Our World in Data. Retrieved 08 November 2026, from https://reference.statizoid.com/compare/period-average-age-of-mothers/guernsey/jersey/

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About this data

Indicator: Average age of mothers at childbirth
Unit: years
Source: Human Fertility Database (2026); UN, World Population Prospects (2024) – with major processing 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: 30 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.