How Many People Are Named Oisin?
people named Oisin are alive in the United States today (estimate)
About 1 in 672,804 people in the US has this name
Based on 513 babies named Oisin in Social Security records from 1991 to 2025, and the share of each birth year still alive in 2025.
Popularity Rank
💎💎 Very Rare
Peak Year
31 births
Trend
Stable (last 10 years)
📖 Name Origin & Meaning
Meaning:
Means "little deer", derived from Irish os "deer" combined with a diminutive suffix. In Irish legend Oisín was a warrior hero and a poet, the son of Fionn mac Cumhail.
Source of the meaning, origin, pronunciation and related names: Behind the Name.
Related & Similar Names
⚧ Gender Distribution
All of the babies given the name Oisin in the records were boys.
👥 Age Distribution
The average person named Oisin alive today is about 12 years old, and 97% are under 30. Half of them were between 5 and 19 in 2025.
📈 Popularity Over Time
Oisin first appears in the records in 1991 and was given most often in 2020, to 31 babies. In 2025, 22 babies got the name.
Babies given the name each year, 1991 to 2025
🏆 Rank History
Oisin has never been one of the 100 most popular boys' names. Its best rank was #3,545, in 2020. In 2025 it ranked #4,659.
| Boys | |
|---|---|
| Rank in 2025 | #4,659 |
| Best rank | #3,545 (2020) |
| Years in the top 100 | None |
| Rank in its biggest decade | #5,175 in the 2010s |
📍 State-Wise Distribution
People named Oisin alive today, by the state where they were born (estimate; state records start in 1910).
More people named Oisin were born in New York than in any other state: about 29 of those alive today.
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