Iarlaith
Iarlaith was the #85 boys' name in Ireland in 2025 (68 babies).
Iarlaith as a boy’s name
- Northern Ireland
- Ireland
Show the numbers
| Year | Northern Ireland | Ireland |
|---|---|---|
| 2025 | #138 (17) | #85 (68) |
| 2024 | #136 (16) | #99 (56) |
| 2023 | #232 (8) | #119 (48) |
| 2022 | #264 (7) | #121 (50) |
| 2021 | #249 (8) | #113 (57) |
| 2020 | #252 (7) | #147 (39) |
| 2019 | #254 (7) | #148 (39) |
| 2018 | — | #177 (32) |
| 2017 | #229 (8) | #203 (28) |
| 2016 | — | #182 (32) |
| 2015 | #342 (4) | #167 (37) |
| 2014 | — | #203 (29) |
| 2013 | — | #229 (24) |
| 2012 | — | #279 (17) |
| 2011 | — | #308 (14) |
The tide so far
- Peaked in Ireland in 2025 at #85.
- Rising over the last five years.
- First recorded in Ireland in 1991.
How common is it?
about 1 in 350 baby boys in the published Ireland list for 2025.
In a group of 1,000 children born that year, you would expect to meet about 3. How we work this out.
How common, country by country
| Where | Sex | Latest year | Share | Verdict |
|---|---|---|---|---|
| Northern Ireland | Boys | 2025 | about 1 in 490 | common |
| Ireland | Boys | 2025 | about 1 in 350 | common |
Next year
On its recent trend, Iarlaith is likely to hold steady in Ireland in 2026: about 1 in 360 baby boys. Likely range 1 in 280 to 1 in 450.
Estimate, not an official figure. How we estimate.
Spellings
Official statistics count each spelling separately, so we show them side by side rather than adding them up.
| Spelling | Where | Sex | Latest rank | Babies |
|---|---|---|---|---|
| Iarlaith | Ireland | Boys | #85 | 68 |
| Íarlaith | Ireland | Boys | — | too few |
| Iarlaith | Northern Ireland | Girls | — | too few |
| Iarlaith | Northern Ireland | Boys | #138 | 17 |