Boys' name · since 1991
Oisin
513 babies named Oisin in U.S. Social Security records since 1991, with the highest year being 2020. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #7,777 of 45,481
- all-time among boys
- #4,607 of 13,930
- 2025 SSA year
- 513
- born since 1991
- 2010s
- peak decade
Yes -- Oisin is the #4607 most popular boys' name in the U.S. today, with 513 recorded since 1991.
According to the U.S. Social Security Administration, Oisin has been recorded 513 times among boys since 1991, currently ranked #4607 nationally and more common than 67% of boys, with its heaviest use in the 2010s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1991 to 2025.
- #7,777 of 45,481 all-time among boys
- #4,607 of 13,930 2025 SSA year
- 513 born since 1991
- 2010s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Oisin ranks #7,777 of 45,481 boys' names by all-time recorded births (highest first) and #4,607 of 13,930 among boys' names in 2025. 513 born since 1991, peaking in the 2010s.
- #7,777 of 45,481
- all-time among boys
- #4,607 of 13,930
- 2025 SSA year
- 513
- born since 1991
- 2010s
- peak decade
Oisin's 513 recorded births place it above 82.88% of the 45,481 boys names in the full SSA archive.
The state file records this name in 3 jurisdictions, led by New York.
How Oisin compares
513 Top 44% higher than 56% of 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Oisin's all-time total is 39% above the median boys name, and Liam still leads by a wide margin.
| Metric | Oisin | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 513 | 369 | 358,536 |
| Peak-year births | 31 | 34 | 22,252 |
Oisin's usage pattern, beyond the headline number
Divide Oisin's SSA record in two at 2010 and the more recent half accounts for 66% of all births, the earlier half the remaining 34%, consistent with a name still gaining ground rather than fading. Its calmest year was 1991, with only 6 births recorded -- set against the 2020 peak of 31, that's the full swing in one name's fortunes.
Oisin popularity over time
Annual U.S. births registered with the Social Security Administration · 1991–2025
- Peak year (2020)
- 31
- Annual births at peak, across 35 years of records
Oisin by decade
2010s is the heaviest window (181 births, 35% of the file).
2010s was Oisin's strongest decade.
181 babies received the name during that ten-year window, about 35% of all-time use.
Oisin births by decade
Total births in each ten-year window
- 1990s 43
1990s
43 births
- 2000s
2000s
132 births
- 2010s
2010s
181 births
- 2020s
2020s
157 births
What this shows Peak: 2010s at 181 births (35% of all-time use).
How Oisin compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Oisin's total volume
Oisin by state
Where Oisin concentrates geographically, total births since 1991
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | New York | | 29 | 5.7% |
| #2 | California | | 11 | 2.1% |
| #3 | Massachusetts | | 5 | 1.0% |
29 of 513 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Oisin? ▼
Where does Oisin sit in the SSA name archive? ▼
When was Oisin most popular? ▼
Where is Oisin most popular? ▼
How long has the name Oisin been used? ▼
What to do with Oisin's data
- Oisin's usage has stayed within range of its 2010s decade-level peak (181 total births) through the 2020s (157) -- a comparatively stable name, not a fading trend.
- New York records the most Oisins (29 births) -- see the full state breakdown if geography matters to your decision. New York names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Oisin
Related Names
Names with a similar popularity rank to Oisin
Nationwide names with similar peak year or record span
Two nationwide peer axes for Oisin: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2020)
Similar record span (~34 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1991–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Oisin draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.