Girl · #16,210 in 2026

Caoilainn

Name: Popularity of the name Caoilainn in U.S. births, 1880–2026
Creator: U.S. Social Security Administration
License: https://www.ssa.gov/foia/
Keywords: Caoilainn, baby name, popularity, U.S., SSA, rankings

Caoilainn is a feminine given name of Irish origin, derived from the words "caol-" and "-fionn". The name means "slender", "white", "fair", or "pure". Caoilainn originated as a name in the 6th century, concurrent with the Irish female saint, Saint Caolainn.

Current Rank

#16,210

Peak Rank

#7,746 (2013)

Total Babies

5-Yr Trend

Stable

2004

First Year

2016

Last Year

2013

Peak Year

#7746

Peak Rank

Total Count

Years Active

Meaning & Origin of Caoilainn

What this name means, where it came from, and how it has traveled across cultures.

Source: Wikipedia (CC BY-SA 3.0). Read more →

The Story of Caoilainn

Caoilainn first appeared in U.S. Social Security Administration records as a baby girl name in 2004, with 11 babies given the name that year. Its peak popularity came in 2013, when 15 Caoilainns were born — ranking #7,746 that year. As of 2026, Caoilainn ranks #16,210 for baby girls with 5 births, with steady use. In total, more than 91 Caoilainns have been born in the U.S. since records began in 1880, spanning the 2000s through the 2020s.

Popularity Over Time

Popularity by State

Top 10

11-50

51-100

101-500

500+

No data

Names that sound like Caoilainn

Phonetically similar names — useful when Caoilainn is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.

Caolan
Collen
Coghlan
Cauline
Collin
Kaolin
Coughlan
Coulon
Kaoline
Column
Colon
Cullen

Source: Datamuse . Phonetic similarity ranking, not curated.

Frequently Asked Questions about Caoilainn

What does the name Caoilainn mean?

How popular is Caoilainn in 2026?

In 2026, Caoilainn ranks #16,210 among girls' names in the U.S., with 5 babies given the name that year.

When was Caoilainn most popular?

Caoilainn reached its peak popularity in 2013, ranking #7,746 that year with 15 babies given the name.

Is Caoilainn a unisex name?

In U.S. Social Security records, Caoilainn is primarily a girl's name. We don't have meaningful data for it as a boy's name.

What names go well with Caoilainn?

Names that share a similar style or popularity range with Caoilainn include Ondine, Cici, Karlina. These pairings are based on rank proximity and naming era in U.S. data.

About the name Caoilainn

Caoilainn is a girl baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 2004 and has accumulated 91 births in the dataset. Caoilainn's peak popularity came in 2013 when it ranked #7,746. Use the chart and map above to compare Caoilainn's trajectory across years and U.S. states, or browse the related names section to discover similar choices.

Continue exploring

Data sources

Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
Predicted nationality distribution — Nationalize.io .
Phonetically similar names — Datamuse .

Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.