How many years of comparable data are there for Czechia and Slovenia?

37 years are reported by both, from 1983 to 2019.

Where does this data come from?

Human Fertility Database (2025) – processed by Our World in Data, published as Average age of mothers at childbirth by birth order. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Czechia vs Slovenia: Average age of mothers at childbirth by birth order

Czechia

28.81 years

in 2021

Slovenia

28.93 years

in 2019

Czechia rank

21st

Slovenia rank

20th

Average age of mothers at childbirth by birth order over time

Czechia
Slovenia

How they compare

Slovenia currently reports 28.93 years against 28.81 years in Czechia, a difference of 0.12 years.

Across all 37 years both countries report, Slovenia has been ahead every year.

Czechia ranks 21st and Slovenia ranks 20th of 33 countries.

Slovenia has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Czechia	Slovenia	Difference	Ahead
1980s	22.4 years	23.2 years	0.8029 years	Slovenia
1990s	23.29 years	24.85 years	1.56 years	Slovenia
2000s	26.37 years	27.51 years	1.14 years	Slovenia
2010s	28.12 years	28.65 years	0.528 years	Slovenia

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth by birth order, Czechia or Slovenia?: Slovenia, at 28.93 years against 28.81 years in Czechia as of 2019.
What is the difference in average age of mothers at childbirth by birth order between Czechia and Slovenia?: 0.12 years, with Slovenia ahead.
How many years of comparable data are there for Czechia and Slovenia?: 37 years are reported by both, from 1983 to 2019.
How do Czechia and Slovenia rank globally for average age of mothers at childbirth by birth order?: Czechia ranks 21st and Slovenia ranks 20th of 33 countries.
Where does this data come from?: Human Fertility Database (2025) – processed by Our World in Data, published as Average age of mothers at childbirth by birth order. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Czechia vs Slovenia: Average age of mothers at childbirth by birth order. Statizoid, drawing on Human Fertility Database (2025) – processed by Our World in Data. Retrieved 04 September 2026, from https://population.statizoid.com/compare/period-average-age-of-mothers-birth-order/czechia/slovenia/

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About this data

Indicator: Average age of mothers at childbirth by birth order
Unit: years
Source: Human Fertility Database (2025) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 33 places, 1,628 data points, 1933–2024
Last refreshed: 28 August 2026

Average age of mothers when they have their first child in a specific year. It is standardized for the age structure of the female population of reproductive age.