Fionn
boy name#4139 in 2025Fionn entered the US charts in 1973, peaked at #2943 in 2018, ranks #4139 today — a rare gem few children share.
Popularity 1973–2025
#4139
rank today
#2943
peak (2018)
25
babies in 2025
rare
a rare gem few children share
Rank by decade
| Decade | Average rank |
|---|---|
| 1970s | #5101 |
| 1990s | #8318 |
| 2000s | #4659 |
| 2010s | #3648 |
| 2020s | #3919 |
Strongest states
Over the last decade, Fionn has been most popular in NY, CA.
Living bearers
About 700 people named Fionn are estimated to be alive in the US today.
The typical Fionn is a kid of about 11 — this name's wave is very recent.
Estimated from official SSA birth records and life tables.
Names similar in popularity
Frequently asked questions
- How popular is the name Fionn in 2025?
- Fionn ranks #4139 among US boy names in 2025, with 25 babies given the name.
- When was the name Fionn most popular?
- Fionn peaked in 2018, reaching #2943 among US boy names.
- Will my child share the name Fionn with classmates?
- Fionn will almost certainly be the only one in school.
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