UK boy's name
Sior
For 2026, the newest official UK baby-name figures on this page are from 2007. That release is the current official benchmark rather than a forecast.
Sior is a boy's name in the UK records. People looking for Sior popularity in 2026 should use the latest official release, which is 2007 in this profile. In that release it ranked #4333, with 3 babies registered with the name. Its strongest year in the published records was 2004, with 3 births.
This profile covers 6 England and Wales registrations across 2 recorded years from 2004 to 2007. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.
The latest count is about 100% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 6 living people in the UK are called Sior. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2008 or 2026.
Key insights
- • Sior ranked #4333 for boys in England and Wales in 2007, with 3 registrations.
- • The name peaked in 2004, when 3 boys were registered as Sior.
- • About 6 living people in the UK are estimated to have Sior as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4333
2007
Births in 2007
3
Latest year
Peak year
2004
3 births
Estimated living
6
2026
Popularity
Sior over time
The chart below shows babies named Sior registered in England and Wales in the years where the name appears in the published records, from 2004 to 2007. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Sior, the clearest high point is 2004. The latest England and Wales figure is 3 births in 2007, compared with 3 at the peak.
Babies born per year
Decades
Sior by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Sior was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.
| Decade | Average rank | Total births | Years covered |
|---|---|---|---|
| 2000s | #3992 | 6 | 2 |
Related
Names similar to Sior
- Samuel 108,505
- Sebastian 33,008
- Sam 20,889
- Stanley 16,354
- Sonny 15,028
- Sean 15,006
- Scott 12,587
- Seth 9,841
- Syed 9,050
- Stephen 8,884
- Spencer 8,333
- Steven 6,970
FAQ
Sior: questions and answers
How popular is the name Sior in the UK right now?
In 2007, Sior was ranked #4333 for boys in England and Wales, with 3 births registered.
When was Sior most popular?
The peak year on record was 2004, with 3 babies registered as Sior in England and Wales.
How many people are called Sior in the UK?
A total of 6 babies have been registered as Sior across the 2 years of ONS England & Wales records shown here.
Which records is this page based on?
The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.