Dataset

Average age of mothers at childbirth by birth order

owid.period-average-age-of-mothers-birth-order
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About

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. Average age of mothers when they have their second child in a specific year. It is standardized for the age structure of the female population of reproductive age. Average age of mothers when they have their third child in a specific year. It is standardized for the age structure of the female population of reproductive age. Average age of mothers when they have their fourth child in a specific year. It is standardized for the age structure of the female population of reproductive age. Average age of mothers when they have their fifth (or greater) child in a specific year. It is standardized for the age structure of the female population of reproductive age. Average age of mothers when they give birth in a specific year. It is standardized for the age structure of the female population of reproductive age.

Cite as: Human Fertility Database (2026) – with minor processing by Our World in Data. “1st birth – HFD” [dataset]. Human Fertility Database, “Human Fertility Database” [original data].

Publisher
Our World in Data
Tier
Official
Covers
1891–2025
Places
Countries, regions and groups of the world
Updated
annual
Last modified
2026-10-22
Units
years
License
Creative Commons Attribution 4.0 International
Method
https://ourworldindata.org/grapher/period-average-age-of-mothers-birth-order

Columns

NameTypeDescription
entitytextcountry, region or group
codetextISO 3166-1 alpha-3, OWID_ for OWID's own groups, empty for most regions
yearinteger
mab__birth_order_1number1st birth (years)
mab__birth_order_2number2nd birth (years)
mab__birth_order_3number3rd birth (years)
mab__birth_order_4number4th birth (years)
mab__birth_order_5pnumber5th birth or higher (years)
mab__birth_order_totalnumberAll (years)

Dimensions

NameValues
entity
year

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