Rhiannon
Rhiannon was the 1119th most popular name for girls in 2025, given to 210 babies. Its best year was 1977, when it ranked 418th; the most babies were born in 1999 (651). Over the last ten years it has moved up 636 places. More babies were named Rhiannon in the 2000s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #1,119 girls, up 38 places since 2020
- Babies in 2025
- 210girls
- Girls and boys
- Almost always a girl’s name2021–2025
- Peak year
- 1999651 babies
- Total since 1880
- 15,544babies recorded
Rhiannon popularity since 1880
A few boys are given the name too: 5 since 1982.
| Year | Rank (girls) | Babies (girls) |
|---|---|---|
| 2025 | #1,119 | 210 |
| 2020 | #1,157 | 204 |
| 2010 | #1,427 | 161 |
| 2000 | #453 | 612 |
| 1990 | #672 | 320 |
| 1980 | #500 | 408 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Rhiannon, counting every spelling?
Rhiannon has no other common spelling that sounds the same. Counting every name's spellings together, it ranks #1,077 for girls in 2025, against #1,119 on the official list.
How many kids will share the name Rhiannon?
210 of the 3,606,400 babies born in the US in 2025 were named Rhiannon (0.06 per 1,000 births). For a girl named Rhiannon born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 40 (of 430 pupils) would have a child named Rhiannon.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Rhiannon?
About 15,200 people born in the US named Rhiannon are alive today, with a median age of 28; half are between 21 and 40. That makes Rhiannon mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Rhiannon by state
How common Rhiannon was among girls born in each state in 2021–2025. It is notably more common than nationally in Colorado (2.1×), Arizona (1.7×), Washington (1.5×). In 21 states fewer than five girls a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Rhiannon: their share of US girls followed the most similar curve since 1880. If you like Rhiannon, they share its era and feel.
Questions about the name Rhiannon
How popular is the name Rhiannon?
Rhiannon was the 1119th most popular name for girls in 2025, given to 210 babies. Its best year was 1977, when it ranked 418th; the most babies were born in 1999 (651). Over the last ten years it has moved up 636 places. More babies were named Rhiannon in the 2000s than in any other decade.
Is Rhiannon a boy or girl name?
In 2021–2025, almost always a girl’s name given the name Rhiannon in the US.
Where is Rhiannon most popular?
In 2021–2025, Rhiannon was most common in West Virginia (0.42 per 1,000 girls), followed by Colorado and Arizona.