Roisin
Girl name · #2701 in 2025 · Very rare
In 2025, 64 baby girls were named Roisin, placing it at #2701 in the official national rankings. A decade ago it stood at #4853, so the name has been rising over the past ten years. Roughly one in every 28,125 girls born in 2025 was named Roisin.
The 59-year story
Roisin first appears in the Social Security records in 1966, when 8 girls received the name. Its all-time peak is essentially right now: 2025, with 64 babies and a rank of #2691. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Roisin per year. Source: SSA.
Unlock the 5-year forecast and compare Roisin against up to 5 other names.
Uniqueness: will there be another Roisin in class?
On our rarity read — which blends how common Roisin is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Roisin will likely be the only one in the room, with the occasional spelling-out as the price.
Where Roisin is most common
State-level data for Roisin is too sparse in 2025 to rank by rate — in most states its count falls below the SSA's per-state reporting threshold (counts under 5 are withheld).
Names like Roisin
Statistically, parents drawn to Roisin tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Razan, Raevyn, Raylin, Keylin, and Rawan.
RazanRaevynRaylinKeylinRawanDaylinRaizelRowynn
Rank history (last 25 years)
| Year | Babies named Roisin | Rank |
|---|---|---|
| 2025 | 64 | #2691 |
| 2024 | 43 | #3575 |
| 2023 | 54 | #3047 |
| 2022 | 38 | #3893 |
| 2021 | 52 | #3112 |
| 2020 | 31 | #4358 |
| 2019 | 31 | #4437 |
| 2018 | 33 | #4237 |
| 2017 | 27 | #4922 |
| 2016 | 26 | #5130 |
| 2015 | 28 | #4853 |
| 2014 | 33 | #4350 |
| 2013 | 22 | #5834 |
| 2012 | 32 | #4486 |
| 2011 | 25 | #5358 |
| 2010 | 19 | #6641 |
| 2009 | 18 | #7066 |
| 2008 | 20 | #6559 |
| 2007 | 22 | #6093 |
| 2006 | 23 | #5709 |
| 2005 | 24 | #5266 |
| 2004 | 33 | #4172 |
| 2003 | 22 | #5419 |
| 2002 | 21 | #5444 |
| 2001 | 25 | #4688 |
Frequently asked questions
Is Roisin a popular girl name?
Roisin ranked #2701 among girls in 2025 with 64 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #4853.
When was the name Roisin most popular?
Roisin peaked in 2025, when 64 American girls received the name (ranked #2691 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Roisin?
In 2025, roughly 1 in 28,125 newborn American girls was named Roisin. On our rarity scale (rarity blended with momentum) we classify it as "very rare".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.