Siobhan
Girl name · #2082 in 2025 · Very rare
How old is the name Siobhan? In official American birth records, Siobhan has been tracked continuously since 1956, giving it 69 years of documented American history.
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: Official national birth records.
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
How old is the name Siobhan?
In official American birth records, the name Siobhan first appeared in 1956 (over 69 years ago), when 58 newborn girls received the name. It has been tracked in modern national records for 69 years.
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: Official American birth records, 1880–2025, national and state files. Counts reflect registered birth records for American families.