Rhiannon
Girl name · #1119 in 2025 · Uniqueness 62/100
Rhiannon is currently the #1119 girl name in the United States — 210 babies received it in 2025. A decade ago it stood at #1743, so the name has been rising over the past ten years. Roughly one in every 8,571 girls born in 2025 was named Rhiannon.
Babies named Rhiannon per year, 1880–2025. Source: SSA.
The 51-year story
Rhiannon first appears in the Social Security records in 1974, when 5 girls received the name. Its peak came in 1999, when 651 girls were named Rhiannon — good for #424 that year. Today's parents encounter it on its way down the popularity curve, which for many parents is exactly the appeal. 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.
Unlock the 5-year forecast and compare Rhiannon against up to 5 other names.
Uniqueness: will there be another Rhiannon in class?
Rhiannon scores 62 out of 100 on our uniqueness scale, which blends current rarity with five-year momentum — putting it in the "distinctive" band. That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Rhiannon is most common
Geography matters for names, and Rhiannon is no exception. In 2025 the states with the most Rhiannons were TX (17), CA (16), NY (13), CO (11), PA (11). Raw counts naturally favor populous states, but the spread still hints at where the name is part of the local naming culture.
Names like Rhiannon
Statistically, parents drawn to Rhiannon tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Allyson, Carson, Alyson, Rebekah, and Rebeca.
AllysonCarsonAlysonRebekahRebecaClarissaCameronYasmeen
Rank history (last 25 years)
| Year | Babies named Rhiannon | Rank |
|---|---|---|
| 2025 | 210 | #1119 |
| 2024 | 178 | #1296 |
| 2023 | 210 | #1154 |
| 2022 | 219 | #1120 |
| 2021 | 224 | #1103 |
| 2020 | 204 | #1156 |
| 2019 | 189 | #1239 |
| 2018 | 150 | #1461 |
| 2017 | 158 | #1436 |
| 2016 | 142 | #1567 |
| 2015 | 120 | #1743 |
| 2014 | 134 | #1602 |
| 2013 | 106 | #1888 |
| 2012 | 128 | #1663 |
| 2011 | 156 | #1446 |
| 2010 | 161 | #1420 |
| 2009 | 204 | #1218 |
| 2008 | 250 | #1045 |
| 2007 | 289 | #934 |
| 2006 | 378 | #739 |
| 2005 | 363 | #741 |
| 2004 | 439 | #622 |
| 2003 | 476 | #579 |
| 2002 | 511 | #537 |
| 2001 | 553 | #496 |
Frequently asked questions
Is Rhiannon a popular girl name?
Rhiannon ranked #1119 among girls in 2025 with 210 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #1743.
When was the name Rhiannon most popular?
Rhiannon peaked in 1999, when 651 American girls received the name (ranked #424 that year). Since 1999 the name has declined from that high.
How rare is the name Rhiannon?
In 2025, roughly 1 in 8,571 newborn American girls was named Rhiannon. It scores 62/100 on our uniqueness scale (rarity blended with momentum), which we classify as "distinctive".
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.