UK girl's name
Kaitlin
A feminine name of English origin meaning "pure".
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.
Kaitlin is a girl's name in the UK records. People looking for Kaitlin popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #4843, with 4 babies registered with the name. Its strongest year in the published records was 2004, with 233 births.
This profile covers 2,983 England and Wales registrations across 29 recorded years from 1996 to 2024. The figures come from ONS England and Wales, NRS Scotland and NISRA Northern Ireland, 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 2% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 3,730 living people in the UK are called Kaitlin. 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
- • Kaitlin ranked #4843 for girls in England and Wales in 2024, with 4 registrations.
- • The name peaked in 2004, when 233 girls were registered as Kaitlin.
- • Kaitlin ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #312 in 2015.
- • About 3,730 living people in the UK are estimated to have Kaitlin as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4843
2024
Births in 2024
4
Latest year
Peak year
2004
233 births
Estimated living
3,730
2026
Meaning
What does Kaitlin mean?
The name Kaitlin is a modern English variant of the ancient Irish Gaelic name Caitlín, which is a feminine form of the male name Cathal. Cathal is derived from the Old Irish word "cατ̃ál," meaning "battle" or "warrior." The name can be traced back to the early medieval period in Ireland, where it was a popular choice among Irish families.
In its earliest recorded use, the name Caitlín appeared in ancient Irish folklore and literature, such as the medieval Irish saga "The Cattle Raid of Cooley." This epic tale, dating back to the 8th century, features a character named Caitlín, who was a warrior princess known for her bravery and strength.
One of the earliest known historical figures to bear the name Caitlín was Caitlín Ní Mhuircheartaigh, an Irish noblewoman and chieftain's wife who lived in the 15th century. She was renowned for her leadership and involvement in local politics during a turbulent period in Irish history.
In the 16th century, another notable figure named Caitlín Dubh Ní Conalláin, an Irish pirate queen, gained notoriety for her daring exploits and command of a fleet of ships that terrorized the coasts of Ireland and Britain.
As the name spread beyond Ireland, it evolved into various spellings, including Cathleen, Kathleen, and eventually, the modern English variant Kaitlin. One of the earliest recorded instances of the spelling "Kaitlin" can be found in the 19th century, when Kaitlin Byrne, an Irish immigrant to the United States, became a prominent figure in the American labor movement, advocating for workers' rights and fair wages.
Another famous Kaitlin from history is Kaitlin Olson, an English actress and comedian born in 1975, best known for her role as Deandra "Sweet Dee" Reynolds in the long-running sitcom "It's Always Sunny in Philadelphia."
Despite its ancient roots, the name Kaitlin has maintained its popularity throughout the centuries, transcending cultural boundaries and continuing to resonate with parents seeking a name that carries a rich historical legacy and a sense of strength and resilience.
Sourced from namecensus.com.
Popularity
Kaitlin over time
The chart below shows babies named Kaitlin 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 Kaitlin, the clearest high point is 2004. The latest England and Wales figure is 4 births in 2024, compared with 233 at the peak.
Babies born per year
Decades
Kaitlin by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Kaitlin 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 | #3784 | 33 | 5 |
| 2010s | #981 | 574 | 10 |
| 2000s | #241 | 1,922 | 10 |
| 1990s | #338 | 454 | 4 |
Geography
Where Kaitlin is most common
The bars show the latest published local birth counts for Kaitlin. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.
Kaitlin ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #312 in 2015.
Across the UK
Kaitlin in Scotland and Northern Ireland
Scotland (NRS)
#585 in 2016
28 years of NRS records, 607 total registered
Northern Ireland (NISRA)
#312 in 2015
19 years of NISRA records, 163 total registered
Related
Names similar to Kaitlin
- Katie 53,185
- Keira 14,411
- Katherine 11,323
- Kayleigh 10,677
- Kate 10,276
- Kelsey 7,224
- Kiera 7,218
- Kayla 6,541
- Kirsty 6,384
- Khadija 5,948
- Kimberley 5,189
- Kaitlyn 5,137
FAQ
Kaitlin: questions and answers
How popular is the name Kaitlin in the UK right now?
In 2024, Kaitlin was ranked #4843 for girls in England and Wales, with 4 births registered.
When was Kaitlin most popular?
The peak year on record was 2004, with 233 babies registered as Kaitlin in England and Wales.
What is the meaning and origin of Kaitlin?
A feminine name of English origin meaning "pure".
How many people are called Kaitlin in the UK?
A total of 2,983 babies have been registered as Kaitlin across the 29 years of ONS England & Wales records shown here, plus 607 more in Scotland and 163 in Northern Ireland.
Where is Kaitlin most common?
In the latest published local rankings, Kaitlin ranks best in Northern Ireland, where it placed #312 in 2015. The regional bars on this page use birth counts, so they also reflect the size of each region.
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.