Roisin
Roisin was given to 64 girls in 2025, #2,716 among girls’ names; 987 Americans have been recorded with it since 1966 (Social Security Administration, published May 2026).
Girls and boys together; gaps are years SSA did not record (fewer than 5 births).
Births of Roisin by year: SSA national baby-name file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
What does Roisin mean?
Wiktionary, English section
Roisin is “a female given name from Irish, anglicized form of Róisín, an Irish diminutive of Rose.”
Meaning: Wiktionary, English section, as of Sep 25, 2026 (CC BY‑SA 4.0).
How popular is Roisin?
#2,716 among girls’ names, 2025
Roisin rose from #4,957 in 2015 to #2,716 in 2025 among girls’ names; its share of girls born rose from 15.7 to 39.8 per million.
64 babies in 2025, the peak
Roisin peaked in 2025, when 64 girls were given it, #2,716 among girls’ names. In 2024 it went to 43 girls.
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2025 | 64 | #2,716 | 39.8 |
| 2024 | 43 | #3,635 | 26.5 |
| 2023 | 54 | #3,084 | 33.7 |
| 2022 | 38 | #3,946 | 23.2 |
| 2021 | 52 | #3,151 | 31.7 |
| 2020 | 31 | #4,423 | 19.2 |
| 2019 | 31 | #4,519 | 18.5 |
| 2018 | 33 | #4,333 | 19.4 |
| 2017 | 27 | #5,025 | 15.6 |
| 2016 | 26 | #5,254 | 14.7 |
Every recorded year (47)
| Year | Births | Rank | Per million girls |
|---|---|---|---|
| 2015 | 28 | #4,957 | 15.7 |
| 2014 | 33 | #4,430 | 18.5 |
| 2013 | 22 | #5,966 | 12.5 |
| 2012 | 32 | #4,578 | 18.2 |
| 2011 | 25 | #5,508 | 14.2 |
| 2010 | 19 | #6,847 | 10.7 |
| 2009 | 18 | #7,285 | 9.8 |
| 2008 | 20 | #6,759 | 10.6 |
| 2007 | 22 | #6,278 | 11.4 |
| 2006 | 23 | #5,867 | 12.1 |
| 2005 | 24 | #5,397 | 13.0 |
| 2004 | 33 | #4,257 | 18.0 |
| 2003 | 22 | #5,555 | 12.0 |
| 2002 | 21 | #5,627 | 11.7 |
| 2001 | 25 | #4,801 | 13.9 |
| 2000 | 19 | #5,889 | 10.5 |
| 1999 | 11 | #8,666 | 6.2 |
| 1998 | 17 | #6,005 | 9.6 |
| 1997 | 20 | #5,174 | 11.5 |
| 1996 | 16 | #5,990 | 9.1 |
| 1995 | 17 | #5,632 | 9.7 |
| 1994 | 12 | #7,489 | 6.7 |
| 1993 | 7 | #11,495 | 3.9 |
| 1992 | 7 | #11,413 | 3.8 |
| 1991 | 11 | #7,834 | 5.9 |
| 1990 | 12 | #7,190 | 6.3 |
| 1989 | 8 | #9,449 | 4.3 |
| 1988 | 7 | #10,099 | 3.9 |
| 1986 | 6 | #10,559 | 3.5 |
| 1985 | 5 | #12,020 | 2.9 |
| 1983 | 5 | #11,588 | 3.0 |
| 1980 | 5 | #11,703 | 3.0 |
| 1979 | 5 | #11,478 | 3.1 |
| 1977 | 8 | #7,385 | 5.2 |
| 1974 | 8 | #6,719 | 5.5 |
| 1971 | 7 | #7,178 | 4.2 |
| 1966 | 8 | #5,176 | 4.7 |
Ranks and shares: girls’ names in each year’s SSA file; share of all girls SSA recorded that year.
Is Roisin a boy’s or a girl’s name?
Roisin has been recorded only for girls: SSA lists no boys with the name in 47 years of records (it lists a name only in years with 5 or more babies of a sex).
Girls and boys named Roisin: the SSA national file counts each sex separately.
How many people are named Roisin, and how old are they?
An estimated 975 Americans named Roisin and born in the U.S. are alive in 2026 (99% of everyone recorded); the median is 14 years old and half are between 5 and 24. An estimate from SSA’s births and life tables, not a count.
The 2020 Census counted 847 people named Roisin (845 women and girls, 2 men and boys). SSA’s births carried forward to Census day, April 1, 2020, predict 705 born in the U.S. The Census count is 20% above that prediction. Possible reasons: the Census counts people born abroad, whom SSA’s files leave out, and it records the name people give, which SSA may have recorded under another spelling or as part of a compound name.
Living estimate: SSA births carried forward with the survival rates in SSA’s cohort life tables (2024 Trustees Report) for each birth year and sex. How the estimate is made. Count: Census Bureau, first names in the 2020 Census (released April 14, 2026; names reported 100 or more times, with the Bureau’s disclosure-avoidance adjustment).
Names spelled alike
Of these 2 names spelled alike, given to 1,084 babies since 1880, Roisin is the most given (91% of them). In 2025 it was given to 64 of their 64 babies (100%), again the most given.
Spelled alike: names in the SSA national file with the same pattern of letters and sounds and at most two letters apart, and Wiktionary’s listed forms; births since 1880 and in 2025, and each name’s peak year, from the SSA national file, published May 8, 2026. Some are separate names, not spellings of one.
Names that rose and fell in the same decades as Roisin
Names whose births rose and fell across the same decades, measured on each decade’s share of births.
Similar histories: each decade’s share of births, from the SSA national file, 1880-2025, published May 8, 2026. SSA’s notes on the data.
More about Roisin and names like it
- Compare Roisin and RosanBirths, ranks, peak and the living estimate side by side.
- The most given names of the 2020sRoisin peaked in 2025.
- New York’s most given namesThe state where SSA recorded the most babies named Roisin since 1910.
- The top names of 2025The year the most babies were named Roisin.
- The names of Generation AlphaMost people named Roisin alive today were born 2013-2025.
- Names starting with RMost given first.