Baby Names US
boys' name ★ peaked 2020

Oisin

Meaning A male given name from Irish, variant of Ossian Gender Boy Rank 2025 #4,660 Trend → Stable

A male given name from Irish, variant of Ossian.

Rank 2025
#4,660
among boys · ↓500 vs 2024
Babies in 2025
22
named Oisin · -15% vs 2024
How common
1 in 77,640
boys born in 2025
Peak year
2020
31 babies
All-time total
513
#7,783 all-time among boys
First recorded
1991
in Social Security records

Oisin popularity over time

513 babies have been named Oisin since 1991, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.010.010.020.0218801900192019401960198020002020Peak 2020Boys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Boys Per year Change Best rank
1880s – – – –
1890s – – – –
1900s – – – –
1910s – – – –
1920s – – – –
1930s – – – –
1940s – – – –
1950s – – – –
1960s – – – –
1970s – – – –
1980s – – – –
1990s 43 4 – #5,788
2000s 132 13 +207% #4,879
2010s 181 18 +37% #3,859
2020s (to 2025) 157 26 +45% #3,547

Where Oisin is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 22 0.01 outside top 500
2027 22 0.01 outside top 500
2028 23 0.01 outside top 500
2029 23 0.01 outside top 500
2030 23 0.01 outside top 500

The story of Oisin

Oisin is rare for boys in the United States, ranked #4,660 in 2025 with 22 babies given the name. It is currently rising compared with a decade ago.

Since 1991, 513 American babies have been named Oisin. Its peak came in 2020, when 31 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Oisin stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Oisin?

The median living Oisin is about 10 years old; half are between 5 and 19. An estimated 500 people named Oisin are alive in the United States today.

median 10 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Oisin year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Boys Boys rank
2025 22 #4,660
2024 26 #4,160
2023 25 #4,307
2022 29 #3,844
2021 24 #4,331
2020 31 #3,547
2019 16 #5,733
2018 28 #3,859
2017 21 #4,699
2016 21 #4,726
2015 16 #5,669
2014 16 #5,648
2013 16 #5,573
2012 17 #5,430
2011 15 #5,872
2010 15 #5,957
2009 20 #4,879
2008 11 #7,569
2007 12 #6,966
2006 16 #5,467
2005 13 #6,123
2004 15 #5,420
2003 14 #5,471
2002 12 #5,974
2001 10 #6,791
2000 9 #7,243
1995 10 #5,788
1990 – –
1985 – –
1980 – –
1975 – –
1970 – –
1965 – –
1960 – –
1955 – –
1950 – –
1945 – –
1940 – –
1935 – –
1930 – –
1925 – –
1920 – –
1915 – –
1910 – –
1905 – –
1900 – –
1895 – –
1890 – –
1885 – –
1880 – –

Frequently asked questions

Quick answers about Oisin, drawn from the same Social Security data as the charts above.

How old is the average Oisin?

The median living Oisin is about 10 years old. Half of all living Oisins are between 5 and 19 years old.

How many people named Oisin are alive today?

An estimated 500 people named Oisin are alive in the United States, based on 513 recorded births and Social Security life tables.

What does the name Oisin mean?

A male given name from Irish, variant of Ossian.

How popular is the name Oisin in 2025?

Oisin ranked #4,660 among boys' names in the United States in 2025, with 22 babies given the name, according to Social Security Administration data.

How many people are named Oisin?

513 babies have been named Oisin in the United States since 1991, based on Social Security card applications.

When was the name Oisin most popular?

Oisin peaked in 2020, when 31 newborns received the name.

Is Oisin a boy or girl name?

Oisin is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Oisin rising or falling?

Oisin is on the rise, noticeably more popular now than a decade ago.

Will Oisin become more popular?

Oisin looks stable. If the recent trend holds, we project roughly 23 boys named Oisin in 2030, ranking outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Oisin

Names that sound and feel close to Oisin: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Oisin with similar names → More names starting with O →