What is the difference in average age of mothers at childbirth by birth order between Bulgaria and Russian Federation?

0.56 years, with Bulgaria ahead.

How many years of comparable data are there for Bulgaria and Russian Federation?

60 years are reported by both, from 1959 to 2018.

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.

Bulgaria vs Russian Federation: Average age of mothers at childbirth by birth order

Bulgaria

26.47 years

in 2021

Russian Federation

25.91 years

in 2018

Bulgaria rank

30th

Russian Federation rank

31st

Average age of mothers at childbirth by birth order over time

Bulgaria
Russian Federation

How they compare

Bulgaria currently reports 26.47 years against 25.91 years in Russian Federation, a difference of 0.56 years.

The two have swapped places 1 time across 60 shared years of data; in 1959 it was Russian Federation ahead.

Bulgaria ranks 30th and Russian Federation ranks 31st of 33 countries.

Across the 7 decades both report, Bulgaria averaged higher in 2 and Russian Federation in 5.

Head to head by decade

Decade	Bulgaria	Russian Federation	Difference	Ahead
1950s	22.11 years	24.44 years	2.33 years	Russian Federation
1960s	22.03 years	24.04 years	2.01 years	Russian Federation
1970s	21.98 years	23.32 years	1.34 years	Russian Federation
1980s	21.88 years	22.93 years	1.06 years	Russian Federation
1990s	22.35 years	22.79 years	0.436 years	Russian Federation
2000s	24.43 years	24.05 years	0.375 years	Bulgaria
2010s	25.86 years	25.32 years	0.5356 years	Bulgaria

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average age of mothers at childbirth by birth order, Bulgaria or Russian Federation?: Bulgaria, at 26.47 years against 25.91 years in Russian Federation as of 2021.
What is the difference in average age of mothers at childbirth by birth order between Bulgaria and Russian Federation?: 0.56 years, with Bulgaria ahead.
How many years of comparable data are there for Bulgaria and Russian Federation?: 60 years are reported by both, from 1959 to 2018.
How do Bulgaria and Russian Federation rank globally for average age of mothers at childbirth by birth order?: Bulgaria ranks 30th and Russian Federation ranks 31st 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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Bulgaria vs Russian Federation: Average age of mothers at childbirth by birth order. Statizoid, drawing on Human Fertility Database (2025) – processed by Our World in Data. Retrieved 06 September 2026, from https://population.statizoid.com/compare/period-average-age-of-mothers-birth-order/bulgaria/russian-federation/

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<a href="https://population.statizoid.com/compare/period-average-age-of-mothers-birth-order/bulgaria/russian-federation/">Bulgaria vs Russian Federation: Average age of mothers at childbirth by birth order</a> — Statizoid

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.