UK boy's name
Iolo
For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.
Iolo is a boy's name in the UK records. People looking for Iolo popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #1859, with 13 babies registered with the name. Its strongest year in the published records was 2012, with 31 births.
This profile covers 425 England and Wales registrations across 29 recorded years from 1996 to 2024. 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 42% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 422 living people in the UK are called Iolo. 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 2025 or 2026.
Key insights
- • Iolo ranked #1859 for boys in England and Wales in 2024, with 13 registrations.
- • The name peaked in 2012, when 31 boys were registered as Iolo.
- • About 422 living people in the UK are estimated to have Iolo as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#1859
2024
Births in 2024
13
Latest year
Peak year
2012
31 births
Estimated living
422
2026
Popularity
Iolo over time
The chart below shows babies named Iolo registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Iolo, the clearest high point is 2012. The latest England and Wales figure is 13 births in 2024, compared with 31 at the peak.
Babies born per year
Decades
Iolo by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Iolo 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 |
|---|---|---|---|
| 2020s | #2733 | 45 | 5 |
| 2010s | #1450 | 194 | 10 |
| 2000s | #1415 | 159 | 10 |
| 1990s | #1742 | 27 | 4 |
Notable bearers
Famous people named Iolo
-
Iolo Williams
writer; zoologist; television presenter; ornithologist; presenter
Welsh zoologist, television presenter and writer
1962-
-
Iolo Ceredig Jones
writer; chess player
Welsh chess player (1947–2021)
1947-2021
-
Iolo Aneurin Williams
journalist; botanist; author; art historian
British journalist, author, art historian and botanist (1890–1962)
1890-1962
-
Iolo Goch
poet
Welsh bard
1320-1398
-
Iolo Caudy
candidate in the 2024 United Kingdom general election
-
Iolo Edger
singer
Welsh musician
Related
Names similar to Iolo
- Isaac 49,129
- Ibrahim 14,115
- Ismail 4,679
- Isaiah 4,629
- Idris 3,810
- Ivan 3,146
- Isa 2,943
- Ian 2,805
- Ilyas 2,552
- Ieuan 2,515
- Ibraheem 2,384
- Ioan 2,295
FAQ
Iolo: questions and answers
How popular is the name Iolo in the UK right now?
In 2024, Iolo was ranked #1859 for boys in England and Wales, with 13 births registered.
When was Iolo most popular?
The peak year on record was 2012, with 31 babies registered as Iolo in England and Wales.
How many people are called Iolo in the UK?
A total of 425 babies have been registered as Iolo across the 29 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.