Roisin
Recorded 1966–2025 · United States
Roisin was most popular in 2025, when 64 American babies were given the name — ranking #4,741 that year. In 2025 it ranked #4,741, with 64 births. Across 1880–2025 the Social Security Administration has recorded 987 people named Roisin.
Roisin over time
How old is the name Roisin?
Roisin first appears in Social Security Administration records in 1966, which makes it about 59 years old as a recorded American name. It has been recorded in 47 of the 60 years since.
How many people are named Roisin?
The Social Security Administration has recorded 987 American births named Roisin between 1880 and 2025. That is recorded US births, not a world population — it counts people issued a Social Security number at birth in the United States. Of those, roughly 976 are estimated to be alive today.
How many babies were named Roisin in 2025?
64 American babies were named Roisin in 2025, ranking #4,741 that year.
Is Roisin getting more or less popular?
Roisin is rising. Across 2021–2025 it averaged 50 births a year, against 28 a year across 2011–2015 — a change of +79% over the decade.
Measured on recorded births. American births overall have fallen since 2007, so most established names lose births over any recent decade — a name can shed births and still hold its rank. Compare the rank above, which is measured against the other names of the same year.
Is Roisin a boy’s or a girl’s name?
Across the whole record Roisin is a girl’s name — 100.0% of the 987 Americans given it were girls and 0.0% were boys. In births since 2016 it is 100% girls and 0% boys.
Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.
How old is someone named Roisin?
Roughly 976 Americans named Roisin are alive today — 99% of everyone ever recorded with the name. The median is 14 years old, and half are between 5 and 24.
An estimate, not a count. Recorded births are carried forward through the Social Security Administration’s 2023 period life table, by age and sex. That table describes mortality in one recent year, so it credits the oldest cohorts with today’s survival rather than the harsher rates they actually lived through — the further back a name peaked, the more this will overstate how many remain. It counts people issued a Social Security number at birth, not immigrants who arrived later.
Where Roisin is most concentrated
How much more common the name is in each state than across the country as a whole.
Explore further
See Roisin on the interactive charts
About · Privacy · Contact
Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org