How Common is the First Name Rhiannon?
We estimate that there are 15,255 people named Rhiannon who are currently alive and were born in the United States. Rhiannon is the 1,081st most common for women, and the 1,900th most common overall.
How Old are People Named Rhiannon?
The average person named Rhiannon is 27.70 years old.
Is Rhiannon a Popular Baby Name Right Now?
210 people named Rhiannon were born in the U.S. in 2025. It was the 1,119th most popular name for girls, and the 2,139th most popular overall.
The popularity of Rhiannon peaked in 1977, when it was the 418th most popular name for baby girls.
Is Rhiannon a Boy's Name or a Girl's Name?
Rhiannon is almost exclusively a female name. More than 99.9% of people named Rhiannon are female.
Popularity of Rhiannon in England
In 2020, Rhiannon was the in England and Wales.