How Many People Are Named Fionn?
people named Fionn are alive in the United States today (estimate)
About 1 in 506,347 people in the US has this name
Based on 682 babies named Fionn in Social Security records from 1973 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
40 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
From Irish fionn (older Irish finn) meaning "fair" or "white". Fionn mac Cumhail was a legendary Irish hero who became all-wise by eating an enchanted salmon. He fought against the giant Fomors with his son Oisín and grandson Oscar.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
⚧ Gender Distribution
All of the babies given the name Fionn in the records were boys.
👥 Age Distribution
The average person named Fionn alive today is about 12 years old, and 99% are under 30. Half of them were between 6 and 17 in 2025.
📈 Popularity Over Time
Fionn first appears in the records in 1973 and was given most often in 2018, to 40 babies. In 2025, 25 babies got the name.
Babies given the name each year, 1973 to 2025
🏆 Rank History
Fionn has never been one of the 100 most popular boys' names. Its best rank was #2,962, in 2018. In 2025 it ranked #4,170.
| Boys | |
|---|---|
| Rank in 2025 | #4,170 |
| Best rank | #2,962 (2018) |
| Years in the top 100 | None |
| Rank in its biggest decade | #3,626 in the 2010s |
📍 State-Wise Distribution
People named Fionn alive today, by the state where they were born (estimate; state records start in 1910).
More people named Fionn were born in California than in any other state: about 51 of those alive today. Compared with the national rate in the same years, Fionn was given 6.7 times as often in New York and 3.1 times in California.
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