Siobhan
Girl name · #2082 in 2025 · Very rare
Siobhan ranks #2082 among American girls' names as of 2025, with 90 newborns given the name that year. A decade ago it stood at #3024, so the name has been rising over the past ten years. Roughly one in every 20,000 girls born in 2025 was named Siobhan.
The 69-year story
Siobhan first appears in the Social Security records in 1956, when 58 girls received the name. Its peak came in 1980, when 282 girls were named Siobhan — good for #646 that year. Today's parents encounter it as a name from their grandparents’ generation, which is precisely the vintage window from which names get revived. 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 Siobhan per year. Source: SSA.
Unlock the 5-year forecast and compare Siobhan against up to 5 other names.
Uniqueness: will there be another Siobhan in class?
On our rarity read — which blends how common Siobhan is today with its five-year momentum — the name reads as "very rare". A high score means genuine rarity — your Siobhan will likely be the only one in the room, with the occasional spelling-out as the price.
Where Siobhan is most common
State-level data for Siobhan 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 Siobhan
Statistically, parents drawn to Siobhan tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Meghan, Adrian, Kristen, Jillian, and Jacklyn.
MeghanAdrianKristenJillianJacklynKatrinaSuzannaSusannah
Rank history (last 25 years)
| Year | Babies named Siobhan | Rank |
|---|---|---|
| 2025 | 90 | #2076 |
| 2024 | 103 | #1925 |
| 2023 | 102 | #1934 |
| 2022 | 84 | #2228 |
| 2021 | 100 | #1955 |
| 2020 | 64 | #2631 |
| 2019 | 47 | #3337 |
| 2018 | 44 | #3497 |
| 2017 | 33 | #4304 |
| 2016 | 52 | #3139 |
| 2015 | 56 | #3024 |
| 2014 | 54 | #3080 |
| 2013 | 69 | #2568 |
| 2012 | 64 | #2734 |
| 2011 | 52 | #3173 |
| 2010 | 77 | #2427 |
| 2009 | 62 | #2826 |
| 2008 | 50 | #3316 |
| 2007 | 57 | #3047 |
| 2006 | 61 | #2850 |
| 2005 | 64 | #2636 |
| 2004 | 71 | #2396 |
| 2003 | 108 | #1743 |
| 2002 | 91 | #1934 |
| 2001 | 86 | #1978 |
Frequently asked questions
Is Siobhan a popular girl name?
Siobhan ranked #2082 among girls in 2025 with 90 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #3024.
When was the name Siobhan most popular?
Siobhan peaked in 1980, when 282 American girls received the name (ranked #646 that year). Since 1980 the name has declined from that high.
How rare is the name Siobhan?
In 2025, roughly 1 in 20,000 newborn American girls was named Siobhan. 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.