Baby Names US
girls' name ★ peaked 1999

Rhiannon

Meaning A female given name from Welsh Gender Girl Rank 2025 #1,119 Trend ↑ Rising 14%

A female given name from Welsh.

Rank 2025
#1,119
among girls · ↑181 vs 2024
Babies in 2025
210
named Rhiannon · +18% vs 2024
How common
1 in 7,654
girls born in 2025
Peak year
1999
651 babies
All-time total
15,544
#1,256 all-time among girls
First recorded
1974
in Social Security records

Rhiannon popularity over time

15,544 babies have been named Rhiannon since 1974, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.10.20.30.418801900192019401960198020002020GirlsBoys
GirlsBoys

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – – – – – –
1890s – – – – – –
1900s – – – – – –
1910s – – – – – –
1920s – – – – – –
1930s – – – – – –
1940s – – – – – –
1950s – – – – – –
1960s – – – – – –
1970s 1,666 – 1,666 167 – #418
1980s 3,276 5 3,281 328 +97% #500
1990s 3,833 – 3,833 383 +17% #424
2000s 4,075 – 4,075 408 +6% #453
2010s 1,444 – 1,444 144 -65% #1,241
2020s (to 2025) 1,245 – 1,245 208 +44% #1,108

Where Rhiannon is heading

A five-year projection from the recent trend in births per 1,000 girls (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 girls Implied rank
2026 216 0.13 outside top 500
2027 221 0.14 outside top 500
2028 225 0.14 outside top 500
2029 229 0.14 outside top 500
2030 233 0.14 outside top 500

Where Rhiannon is most popular

Girls named Rhiannon per 1,000 girls born in each state, 2021–2025. National average: 0.128 per 1,000. Strongest in West Virginia, Colorado, and Arizona.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are girls named Rhiannon born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Girls 2021–2025 Per 1,000 vs national
West Virginia 11 0.420 +227%
Colorado 30 0.269 +109%
Arizona 30 0.214 +67%
Washington 28 0.194 +51%
Missouri 21 0.174 +36%
Virginia 29 0.170 +33%
Pennsylvania 39 0.165 +29%
Oklahoma 12 0.163 +27%
Illinois 37 0.162 +26%
Ohio 38 0.160 +25%
Mississippi 7 0.150 +17%
North Carolina 30 0.132 ≈ national
New York 51 0.129 ≈ national
Kentucky 11 0.129 ≈ national
South Carolina 11 0.122 -5%
Texas 98 0.122 -5%
Indiana 17 0.121 -6%
Wisconsin 12 0.117 -9%
Florida 47 0.110 -14%
Kansas 6 0.104 -19%
California 84 0.100 -22%
Tennessee 15 0.095 -26%
Arkansas 5 0.095 -26%
New Jersey 14 0.078 -40%
Georgia 17 0.075 -42%
Maryland 7 0.066 -49%
Michigan 12 0.066 -49%
Utah 5 0.060 -53%
Massachusetts 7 0.058 -55%
Minnesota 5 0.046 -64%
Alaska – – –
Alabama – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Hawaii – – –
Iowa – – –
Idaho – – –
Louisiana – – –
Maine – – –
Montana – – –
North Dakota – – –
Nebraska – – –
New Hampshire – – –
New Mexico – – –
Nevada – – –
Oregon – – –
Rhode Island – – –
South Dakota – – –
Vermont – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Rhiannon

Rhiannon is uncommon for girls in the United States, ranked #1,119 in 2025 with 210 babies given the name. It is currently rising compared with a decade ago.

Since 1974, 15,544 American babies have been named Rhiannon. Its peak came in 1999, when 651 newborns received the name, the signature sound of the 1990s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Rhiannon stood among all girls' names in any year, or use the compare tool to plot it against other names.

How old are people named Rhiannon?

The median living Rhiannon is about 27 years old; half are between 20 and 39. An estimated 15 thousand people named Rhiannon are alive in the United States today.

median 27 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Rhiannon year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys rank
2025 210 #1,119 – –
2024 178 #1,300 – –
2023 210 #1,157 – –
2022 219 #1,128 – –
2021 224 #1,108 – –
2020 204 #1,157 – –
2019 189 #1,241 – –
2018 150 #1,471 – –
2017 158 #1,440 – –
2016 142 #1,571 – –
2015 120 #1,755 – –
2014 134 #1,613 – –
2013 106 #1,898 – –
2012 128 #1,670 – –
2011 156 #1,452 – –
2010 161 #1,427 – –
2009 204 #1,226 – –
2008 250 #1,048 – –
2007 289 #935 – –
2006 378 #740 – –
2005 363 #744 – –
2004 439 #622 – –
2003 476 #580 – –
2002 511 #537 – –
2001 553 #497 – –
2000 612 #453 – –
1995 350 #627 – –
1990 320 #672 – –
1985 272 #667 – –
1980 408 #500 – –
1975 15 #4,305 – –
1970 – – – –
1965 – – – –
1960 – – – –
1955 – – – –
1950 – – – –
1945 – – – –
1940 – – – –
1935 – – – –
1930 – – – –
1925 – – – –
1920 – – – –
1915 – – – –
1910 – – – –
1905 – – – –
1900 – – – –
1895 – – – –
1890 – – – –
1885 – – – –
1880 – – – –

Frequently asked questions

Quick answers about Rhiannon, drawn from the same Social Security data as the charts above.

How old is the average Rhiannon?

The median living Rhiannon is about 27 years old. Half of all living Rhiannons are between 20 and 39 years old.

How many people named Rhiannon are alive today?

An estimated 15 thousand people named Rhiannon are alive in the United States, based on 15,544 recorded births and Social Security life tables.

What does the name Rhiannon mean?

A female given name from Welsh.

How popular is the name Rhiannon in 2025?

Rhiannon ranked #1,119 among girls' names in the United States in 2025, with 210 babies given the name, according to Social Security Administration data.

How many people are named Rhiannon?

15,544 babies have been named Rhiannon in the United States since 1974, based on Social Security card applications.

When was the name Rhiannon most popular?

Rhiannon peaked in 1999, when 651 newborns received the name.

Is Rhiannon a boy or girl name?

Rhiannon is overwhelmingly a girl's name: 100% of babies with the name.

Is the name Rhiannon rising or falling?

Rhiannon is on the rise, noticeably more popular now than a decade ago.

Will Rhiannon become more popular?

Rhiannon is trending upward. If the recent trend holds, we project roughly 233 girls named Rhiannon in 2030, which would rank outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Names like Rhiannon

Names that sound and feel close to Rhiannon: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Rhiannon with similar names → More names starting with R →