How Many People Are Named Cailin?
people named Cailin are alive in the United States today (estimate)
About 1 in 92,674 people in the US has this name
Based on 3,743 babies named Cailin in Social Security records from 1968 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
169 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Variant of KAYLYN. It also coincides with the Irish word cailín meaning "girl".
Source of the meaning, origin, pronunciation and related names: Behind the Name.
Same Sound, Other Spellings
These names are pronounced like Cailin in English. Counting Cailin and these spellings together, about 90,205 people alive in the US have the name.
⚧ Gender Distribution
Of the babies given the name Cailin, 99.2% were girls and 0.8% were boys.
👥 Age Distribution
The average person named Cailin alive today is about 24 years old, and 73% are under 30. Half of them were between 17 and 30 in 2025.
📈 Popularity Over Time
Cailin first appears in the records in 1968 and was given most often in 1998, to 169 babies. In 2025, 7 babies got the name.
Babies given the name each year, 1968 to 2025
🏆 Rank History
Cailin has never been one of the 100 most popular girls' names. Its best rank was #1,159, in 1998. In 2025 it ranked #12,149.
| Girls | |
|---|---|
| Rank in 2025 | #12,149 |
| Best rank | #1,159 (1998) |
| Years in the top 100 | None |
| Rank in its biggest decade | #1,489 in the 2000s |
📍 State-Wise Distribution
People named Cailin alive today, by the state where they were born (estimate; state records start in 1910).
More people named Cailin were born in California than in any other state: about 407 of those alive today. Compared with the national rate in the same years, Cailin was given 3.8 times as often in Massachusetts, 2.2 times in Pennsylvania and 1.9 times in New York.
Look up another name
⊙ We don't save the names you search.