Caoilainn

femaleStatistical record

What official birth registration shows about Caoilainn: which national registrars published it, in which years, and how its recorded position changed.

No researched meaning, origin or pronunciation yet — what that means.

Caoilainn: Recorded since 1997, it reached #300 in 2005, and it was last ranked in 2019.

3registrars recorded it
25times a registrar ranked it
23years from first to last
#300highest recorded position
6groupings it qualifies for

Region

Falling

among girls in England and Wales · 2004–2015

View as table

England and Wales · Girls rank by year
Year	Rank
2004	#4598
2005	#4798
2011	#4764
2014	#4684
2015	#4736

VerifiedSource: Office for National Statistics — Baby Names in England and Wales.Confidence: high.

See all England and Wales names · Source: Office for National Statistics — Baby Names in England and Wales

What the data shows

FallingEngland and Wales · Girls

Recorded in official data among girls in Republic of Ireland in 18 of the 23 years from 1997 to 2019.

In 2015: #660 among girls in Republic of Ireland, #4736 among girls in England and Wales.

Official data from 3 national registrars across 3 regions, 1997–2019 · Office for National Statistics. Data sources

Popularity journey

First recorded1997
First recorded at #496 among girls in Republic of Ireland in 1997 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Girls
Highest recorded1997–2019
Highest recorded position: #300 among girls in Republic of Ireland, in 2005 (recorded 1997–2019).
Republic of Ireland · Girls
Most recent2019
Most recently recorded at #621 among girls in Republic of Ireland, in 2019.
Republic of Ireland · Girls

Caoilainn appears in 3 of the published lists Namewise holds. The longest record is Republic of Ireland · Girls, which has ranked it in 18 years beginning in 1997, and has registered 118 births with the name.

Caoilainn across 3 official records

Each registrar publishes its own list, so these figures are read down a row, never across one. A position in one country is not comparable with a position in another, and Namewise never combines them into a single ranking. The birth counts do not compare across rows either, for a different reason: England and Wales registers roughly thirty times as many births a year as Northern Ireland, so a larger total says which registrar recorded it as much as how widely the name was given.

Caoilainn's first, highest and most recent recorded position in each official list, with the number of births each registrar registered with the name and its largest single year
Published list	First recorded	Highest	Most recent	Years recorded	Births registered	Most in one year
Republic of Ireland · Girls	#496 (1997)	#300 (2005)	#621 (2019)	18 of 23	118 (1997–2019)	16 (2012)
England and Wales · Girls	#4598 (2004)	#4598 (2004)	#4736 (2015)	5 of 12	18 (2004–2015)	4 (2011)
Northern Ireland · Girls	#348 (2000)	#348 (2000)	#413 (2007)	2 of 8	6 (2000–2007)	3 (2000)

Caoilainn by decade in Republic of Ireland · Girls

Births registered with the name in each decade of this one list, with the number of years the list covers in that decade. Bars are scaled on births a year, which is the figure that compares between decades — a decade the list only partly covers has a smaller total without being a quieter decade. Figures belong to this registrar alone and do not carry to another.

Births registered with Caoilainn in Republic of Ireland · Girls, by decade, with years covered and the average per year
Decade	Births registered	Years covered	A year
1990s	12	3 of 10	4
2000sbusiest	45	6 of 10	8
2010s	61	9 of 10	7

Across Republic of Ireland · Girls, the 2000s were its busiest decade — the 6 years of it this list covers, averaging 8 births a year.

See the names Republic of Irelandhas recorded the most births with →

Caoilainn appears in

Groupings this name qualifies for under their own stated rules, from the same official statistics shown above.

Popularity data

Official popularity data is available for 3 regions, from 1997 to 2019. Highest recorded position: #300 in Republic of Ireland in 2005.

Caoilainn's recorded popularity observations by year, region and administrative category, including rank, registered births, source confidence and when each region's data was last reviewed.
Year	Region	Category	Rank	Births registered	Confidence	Status
2015	England and Wales	female	#4736	4	High	Verified
2014	England and Wales	female	#4684	4	High	Verified
2011	England and Wales	female	#4764	4	High	Verified
2005	England and Wales	female	#4798	3	High	Verified
2004	England and Wales	female	#4598	3	High	Verified
2007	Northern Ireland	female	#413	3	High	Verified
2000	Northern Ireland	female	#348	3	High	Verified
2019	Republic of Ireland	female	#621	5	High	Verified
2018	Republic of Ireland	female	#629	5	High	Verified
2017	Republic of Ireland	female	#734	4	High	Verified
2016	Republic of Ireland	female	#868	3	High	Verified
2015	Republic of Ireland	female	#660	5	High	Verified
2014	Republic of Ireland	female	#427	10	High	Verified
2013	Republic of Ireland	female	#587	6	High	Verified
2012	Republic of Ireland	female	#317	16	High	Verified
2010	Republic of Ireland	female	#555	7	High	Verified
2009	Republic of Ireland	female	#641	5	High	Verified
2008	Republic of Ireland	female	#546	7	High	Verified
2007	Republic of Ireland	female	#404	10	High	Verified
2006	Republic of Ireland	female	#431	8	High	Verified
2005	Republic of Ireland	female	#300	12	High	Verified
2001	Republic of Ireland	female	#606	3	High	Verified
1999	Republic of Ireland	female	#528	3	High	Verified
1998	Republic of Ireland	female	#380	5	High	Verified
1997	Republic of Ireland	female	#496	4	High	Verified

England and Wales hub — collected by Office for National Statistics
Northern Ireland hub — collected by NISRA
Republic of Ireland hub — collected by CSO Ireland

See methodology and data sources for how popularity data is collected and what "confidence" means.

Where Caoilainn is officially recorded

3 official registrars have recorded Caoilainn, between 1997 and 2019, in 21 of those 23 years. Each registrar publishes for its own population on its own methodology, so the positions below are each one country's own ranking and are not comparable with one another.

Registrar	Recorded	Years	Its own highest position
Republic of Ireland	1997–2019	18	#300 in 2005
Northern Ireland	2000–2007	2	#348 in 2000
England and Wales	2004–2015	5	#4598 in 2004

What the record shows

Recorded by 3 registrars between 1997 and 2019, ranked in 21 years of that period.

Its highest recorded position is #300, first reached in 2005.

Its largest count from any one registrar is 16 births, registered in Republic of Ireland in 2012.

Its record falls into 2 separate stretches, with a longest absence of 2 years.

A second registrar first ranked it in 2000, and 7 years separate the first registrar to record it from the last.

Every figure here is counted from the seven official registrars Namewise holds. A position is only ever a place within the list that published it, and a record that thins or stops is a fact about what registrars printed — never about how many children received the name.

Where to go next

Records with a comparable body of evidence, so the catalogue can be read outward from this one. Each group states the rule it was selected by.

Next in the catalogue

The records either side of this one alphabetically.

Cansu · #1697, 16y
Caodhan · #214, 16y
Caoileann · #407, 11y
Caoilfhionn · #344, 38y

A comparable record

Records held by the same 3 registrars, over a similar number of ranked years, whose highest position is closest to this one. A similar body of evidence — never a claim that the names themselves are alike.

Rhianne · #301, 23y
Austeja · #298, 21y
Azlan · #298, 21y
Borys · #302, 19y

Also first recorded in the 1990s

Records whose earliest ranking in Namewise's registrar data also falls between 1990 and 1999.

Alishba · #300, 29y
Maximillian · #300, 30y
Bradlee · #299, 20y
Chloe-Louise · #301, 24y

Caoilainn was ranked #300 in Republic of Ireland · Girls in 2005. These are the names immediately either side of it on that published list — a fact about the registrar's own output, not a similarity judgement.

Abbi#300
Ashley#300
Caithlin#300
Carly#300
Aideen#320
Aleksandra#320
Angela#320
Ashleigh#320

Caoilainn and the names beside it

Two names in the same published list are measured on the same scale, in the same year, by the same registrar — so these are positions that genuinely passed each other, not a similarity judgement. Drawn from the 2,577 names with a recorded popularity standing (common, familiar, uncommon), so a name outside that set could have passed Caoilainn without appearing here.

Caoilainn moved ahead of

Tracey
In 2006 they stood at #528 and #392 in Republic of Ireland · Girls; by 2007 that had become #404 and #842.
Bernadette
In 2004 they stood at #606 and #498 in Republic of Ireland · Girls; by 2005 that had become #300 and #689.
Jordan
In 2004 they stood at #606 and #166 in Republic of Ireland · Girls; by 2005 that had become #300 and #689.
Pamela
In 2004 they stood at #606 and #498 in Republic of Ireland · Girls; by 2005 that had become #300 and #689.

Moved ahead of Caoilainn

Harper
In 2012 they stood at #317 and #398 in Republic of Ireland · Girls; by 2013 that had become #587 and #241.
Aria
In 2012 they stood at #317 and #510 in Republic of Ireland · Girls; by 2013 that had become #587 and #246.
Ivy
In 2012 they stood at #317 and #371 in Republic of Ireland · Girls; by 2013 that had become #587 and #304.
Aurora
In 2014 they stood at #427 and #536 in Republic of Ireland · Girls; by 2015 that had become #660 and #402.

Moved the opposite way to Caoilainn

Elise
Between 1998 and 2019 in Republic of Ireland · Girls, Caoilainn went from #380 to #621 while Elise went from #498 to #196.
Evie
Between 1998 and 2019 in Republic of Ireland · Girls, Caoilainn went from #380 to #621 while Evie went from #498 to #29.
Lola
Between 1998 and 2019 in Republic of Ireland · Girls, Caoilainn went from #380 to #621 while Lola went from #425 to #123.
Sadie
Between 1998 and 2019 in Republic of Ireland · Girls, Caoilainn went from #380 to #621 while Sadie went from #498 to #25.

Moved the same way as Caoilainn

Wendy
Between 1998 and 2019 in Republic of Ireland · Girls, Caoilainn went from #380 to #621 and Wendy from #425 to #621.
Anita
Between 1997 and 2017 in Republic of Ireland · Girls, Caoilainn went from #496 to #734 and Anita from #185 to #734.
Ashleigh
Between 1997 and 2017 in Republic of Ireland · Girls, Caoilainn went from #496 to #734 and Ashleigh from #193 to #734.
Cassandra
Between 1997 and 2017 in Republic of Ireland · Girls, Caoilainn went from #496 to #734 and Cassandra from #326 to #734.

What's not yet available

Meaning
Origin
Pronunciation
Nicknames and spelling variants

Absence from this list does not mean the name isn't genuinely meaningful or widely used — only that Namewise hasn't sourced and reviewed that content yet. Absence from a specific year or geography above does not prove zero use there either; official statistics only publish names above a minimum threshold.

Official popularity data is available for 3 regions, from 1997 to 2019. Highest recorded position: #300 in Republic of Ireland in 2005. Source data last verified 2026-07-22.

Caoilainn

Caoilainn at a glance

What the data shows

Popularity journey

Caoilainn across 3 official records

Caoilainn by decade in Republic of Ireland · Girls

Caoilainn appears in

Popularity data

Where Caoilainn is officially recorded

What the record shows

Where to go next

Next in the catalogue

A comparable record

Also first recorded in the 1990s

Names published alongside Caoilainn

Caoilainn and the names beside it

Caoilainn moved ahead of

Moved ahead of Caoilainn

Moved the opposite way to Caoilainn

Moved the same way as Caoilainn

Caoilainn at a glance

Caoilainn across 3 official records

Caoilainn by decade in Republic of Ireland · Girls

Caoilainn appears in

What the record shows

Where to go next

Next in the catalogue

A comparable record

Also first recorded in the 1990s

Names published alongside Caoilainn

Caoilainn and the names beside it

Caoilainn moved ahead of

Moved ahead of Caoilainn

Moved the opposite way to Caoilainn

Moved the same way as Caoilainn