Iarlaith

maleStatistical record

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

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

Iarlaith: Recorded since 1991, its highest recorded position is #85, reached in 2025.

2registrars recorded it
33times a registrar ranked it
35years from first to last
#85highest recorded position

Region

Rising

among boys in Northern Ireland · 2009–2024

View as table

Northern Ireland · Boys rank by year
Year	Rank
2009	#390
2015	#342
2017	#229
2019	#254
2020	#252
2021	#249
2022	#264
2023	#232
2024	#136

VerifiedSource: NISRA — Northern Ireland Baby Names.Confidence: high.

See all Northern Ireland names · Source: NISRA — Northern Ireland Baby Names

What the data shows

RisingNorthern Ireland · Boys

Recorded in official data among boys in Republic of Ireland in 24 of the 35 years from 1991 to 2025.

In 2024: #99 among boys in Republic of Ireland, #136 among boys in Northern Ireland.

Official data from 2 national registrars across 2 regions, 1991–2025 · NISRA. Data sources

Popularity journey

First recorded1991
First recorded at #324 among boys in Republic of Ireland in 1991 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1991–2025
Highest recorded position: #85 among boys in Republic of Ireland, in 2025 (recorded 1991–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #85 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys

Iarlaith appears in 2 of the published lists Namewise holds. The longest record is Republic of Ireland · Boys, which has ranked it in 24 years beginning in 1991, and has registered 619 births with the name.

Iarlaith across 2 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.

Iarlaith'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 · Boys	#324 (1991)	#85 (2025)	#85 (2025)	24 of 35	619 (1991–2025)	68 (2025)
Northern Ireland · Boys	#390 (2009)	#136 (2024)	#136 (2024)	9 of 16	68 (2009–2024)	16 (2024)

Iarlaith by decade in Republic of Ireland · Boys

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 Iarlaith in Republic of Ireland · Boys, by decade, with years covered and the average per year
Decade	Births registered	Years covered	A year
1990s	3	1 of 10	3
2000s	33	7 of 10	5
2010s	265	10 of 10	27
2020sbusiest	318	6 of 10	53

Across Republic of Ireland · Boys, the 2020s were its busiest decade — the 6 years of it this list covers, averaging 53 births a year.

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

Popularity data

Official popularity data is available for 2 regions, from 1991 to 2025. Highest recorded position: #85 in Republic of Ireland in 2025.

Iarlaith'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
2024	Northern Ireland	male	#136	16	High	Verified
2023	Northern Ireland	male	#232	8	High	Verified
2022	Northern Ireland	male	#264	7	High	Verified
2021	Northern Ireland	male	#249	8	High	Verified
2020	Northern Ireland	male	#252	7	High	Verified
2019	Northern Ireland	male	#254	7	High	Verified
2017	Northern Ireland	male	#229	8	High	Verified
2015	Northern Ireland	male	#342	4	High	Verified
2009	Northern Ireland	male	#390	3	High	Verified
2025	Republic of Ireland	male	#85	68	High	Verified
2024	Republic of Ireland	male	#99	56	High	Verified
2023	Republic of Ireland	male	#119	48	High	Verified
2022	Republic of Ireland	male	#121	50	High	Verified
2021	Republic of Ireland	male	#113	57	High	Verified
2020	Republic of Ireland	male	#147	39	High	Verified
2019	Republic of Ireland	male	#148	39	High	Verified
2018	Republic of Ireland	male	#177	32	High	Verified
2017	Republic of Ireland	male	#203	28	High	Verified
2016	Republic of Ireland	male	#182	32	High	Verified
2015	Republic of Ireland	male	#167	37	High	Verified
2014	Republic of Ireland	male	#203	29	High	Verified
2013	Republic of Ireland	male	#229	24	High	Verified
2012	Republic of Ireland	male	#279	17	High	Verified
2011	Republic of Ireland	male	#308	14	High	Verified
2010	Republic of Ireland	male	#322	13	High	Verified
2009	Republic of Ireland	male	#366	10	High	Verified
2008	Republic of Ireland	male	#472	6	High	Verified
2006	Republic of Ireland	male	#493	4	High	Verified
2005	Republic of Ireland	male	#518	3	High	Verified
2003	Republic of Ireland	male	#500	3	High	Verified
2002	Republic of Ireland	male	#393	4	High	Verified
2001	Republic of Ireland	male	#409	3	High	Verified
1991	Republic of Ireland	male	#324	3	High	Verified

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 Iarlaith is officially recorded

2 official registrars have recorded Iarlaith, between 1991 and 2025, in 24 of those 35 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	1991–2025	24	#85 in 2025
Northern Ireland	2009–2024	9	#136 in 2024

No registrar recorded it for 9 years after 1991; it appears again in 2001.

What the record shows

Recorded by 2 registrars between 1991 and 2025, ranked in 24 years of that period.

Its highest recorded position is #85, first reached in 2025.

It held a top-100 place in 2 years, 2 of them consecutive.

Its largest count from any one registrar is 68 births, registered in Republic of Ireland in 2025.

Its record falls into 4 separate stretches, with a longest absence of 9 years.

A second registrar first ranked it in 2009, and 18 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.

Ianto · #1620, 26y
Iarla · #135, 27y
Iasmina · #883, 14y
Iason · #2693, 11y

A comparable record

Records held by the same 2 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.

Ruaridh · #85, 28y
Taj · #91, 19y
Emilian · #96, 21y
Kristie · #73, 22y

Also first recorded in the 1990s

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

Ruaridh · #85, 28y
Tyla · #85, 29y
Anaya · #86, 29y
Chester · #84, 30y

Iarlaith was ranked #85 in Republic of Ireland · Boys in 2025. 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.

Joshua#81
Aidan#82
Benjamin#83
Levi#83
Ronan#86
Éanna#87
Dáire#88
Naoise#88

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 2 regions, from 1991 to 2025. Highest recorded position: #85 in Republic of Ireland in 2025. Source data last verified 2026-07-22.

Iarlaith

Iarlaith at a glance

What the data shows

Popularity journey

Iarlaith across 2 official records

Iarlaith by decade in Republic of Ireland · Boys

Popularity data

Where Iarlaith 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 Iarlaith

Iarlaith at a glance

Iarlaith across 2 official records

Iarlaith by decade in Republic of Ireland · Boys

What the record shows

Where to go next

Next in the catalogue

A comparable record

Also first recorded in the 1990s

Names published alongside Iarlaith