How old is someone named Rhiannon?
The average Rhiannon is 29 years old.
Half of all living Rhiannons are between 21 and 40.
When was Rhiannon popular?
Rhiannon has never really gone out of style. Parents have chosen it every year for more than a century; its busiest year was 1999.
Popular names of 1999 · The most popular names of the 1990s →
Show the numbers by decade
| Born in | Babies born | Alive today |
|---|---|---|
| 1970s | 1,666 | 1,600 |
| 1980s | 3,281 | 3,200 |
| 1990s | 3,833 | 3,800 |
| 2000s | 4,075 | 4,000 |
| 2010s | 1,444 | 1,400 |
| 2020s | 1,245 | 1,200 |
How many Rhiannons are still alive?
About 15,000 Rhiannons are alive in the US today. That's 98% of the roughly 16,000 babies named Rhiannon since 1974.
Nearly every Rhiannon ever born is still alive, because almost all of them are young.
What generation is the name Rhiannon?
About two in five living Rhiannons are in Gen Z, born between 1997 and 2012.
- Gen X 13%
- Millennial 33%
- Gen Z 39%
- Gen Alpha 15%
Is Rhiannon an old name?
Not really. Rhiannon is younger than 51 in 100 names on AgeByName.
Looking ahead: if babies keep getting the name at today's pace, the typical Rhiannon will be 45 in 2056, so the name is getting older.
Is Rhiannon a boy or girl name?
Almost entirely girls: over 99.9% of living Rhiannons are women.
Names the same age as Rhiannon
NAME TWIN
Rhiannon's name twin is Jovan. Of all 3,713 names on AgeByName, Jovan's age curve is the closest match to Rhiannon's: 86% alike.
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Questions about the name Rhiannon
How old is the average Rhiannon?
The average Rhiannon in the US is 29 years old. The median is 28, so half are older and half younger.
How many people are named Rhiannon?
About 15,000 Rhiannons are alive in the US today, out of roughly 16,000 babies given the name since 1974.
When was the name Rhiannon most popular?
In 1999, when about 650 baby girls were named Rhiannon.
Is Rhiannon a Gen Z name?
Partly. Gen Z are the largest group, about 39% of living Rhiannons, but the name spans several generations.
Estimates from Social Security Administration baby-name records (births 1880–2025) and SSA cohort life tables (2026 Trustees Report). Updated each spring. How we calculate this