UK baby names and births statistics
In the UK the most popular baby names and the headline birth figures come from the national statistics agencies: the ONS for England and Wales, National Records of Scotland, and NISRA for Northern Ireland. Olivia and Muhammad are the most popular girls' and boys' names in England and Wales, there are about 591,000 live births a year there, the average age of mothers is around 30.9, and the total fertility rate is about 1.44 children per woman. BabyData brings these headline figures together, each cited to its primary source and refreshed when that source updates.
Headline UK baby statistics
| Measure | Latest UK figure | Source |
|---|---|---|
| Most popular girls’ name (England and Wales) | Olivia | ONS Baby names in England and Wales |
| Most popular boys’ name (England and Wales) | Muhammad | ONS Baby names in England and Wales |
| Most popular girls’ name (Scotland) | Olivia | National Records of Scotland |
| Most popular boys’ name (Scotland) | Noah | National Records of Scotland |
| Live births in England and Wales (latest year) | About 591,000 | ONS Births in England and Wales |
| Average (mean) age of mothers (England and Wales) | About 30.9 years | ONS Births in England and Wales |
| Total fertility rate (England and Wales) | About 1.44 children per woman | ONS Births in England and Wales |
| Births registered in Northern Ireland (latest year) | About 19,500 | NISRA |
Figures are the latest published headline figures from each agency's release and are refreshed on release. Values are rounded. No figure here is estimated by BabyData: each comes from its named primary source.
Where these numbers come from
Baby-name popularity and counts for England and Wales come from the ONS Baby names in England and Wales dataset, published annually. Births, the birth rate and the average age of mothers come from ONS Births in England and Wales. Scotland's figures come from National Records of Scotland, and Northern Ireland's from the Northern Ireland Statistics and Research Agency (NISRA). Each agency publishes on its own schedule, so the latest figure for a given measure may be from a different reference year. BabyData cites the source for every number and updates the table when a new release lands.
For the interactive view of names over time and the underlying data assets, see the UK baby names and births data page. The same figures are also available, with their methods, through the data API and MCP server.
Names and Family Data Desk, BabyData
BabyData's editorial desk builds and documents the tools, citing the underlying rule and the official UK dataset behind every number. Pregnancy-related tools are editorially reviewed against NHS and gov.uk guidance before publication.
Last reviewed: 12 June 2026