Girls' name · since 1974
Rhiannon
15,539 babies named Rhiannon in U.S. Social Security records since 1974, with the highest year being 1999. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #1,256 of 72,339
- all-time among girls
- #1,119 of 17,297
- 2025 SSA year
- 15,539
- born since 1974
- 2000s
- peak decade
Yes -- Rhiannon is the #1119 most popular girls' name in the U.S. today, with 15,539 recorded since 1974.
According to the U.S. Social Security Administration, Rhiannon has been recorded 15,539 times among girls since 1974, currently ranked #1119 nationally and more common than 94% of girls, with its heaviest use in the 2000s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1974 to 2025.
- #1,256 of 72,339 all-time among girls
- #1,119 of 17,297 2025 SSA year
- 15,539 born since 1974
- 2000s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Rhiannon ranks #1,256 of 72,339 girls' names by all-time recorded births (highest first) and #1,119 of 17,297 among girls' names in 2025. 15,539 born since 1974, peaking in the 2000s.
- #1,256 of 72,339
- all-time among girls
- #1,119 of 17,297
- 2025 SSA year
- 15,539
- born since 1974
- 2000s
- peak decade
Rhiannon's 15,539 recorded births place it above 98.26% of the 72,339 girls names in the full SSA archive.
46 jurisdictions carry state-level records, led by California.
How Rhiannon compares
15,539 Top 8% higher than 92% of 17,297 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Rhiannon's all-time total is 41x the median girls name, and Olivia still leads by a wide margin.
| Metric | Rhiannon | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 15,539 | 376 | 567,345 |
| Peak-year births | 651 | 21 | 19,840 |
Rhiannon's usage pattern, beyond the headline number
Rhiannon splits its recorded history at 2000: 44% of all births land in the more recent half, 56% in the earlier half, an evenly balanced pattern over time. The single quietest year was 1974 (5 births) -- compare that against the 1999 peak of 651 for a sense of just how much the name's popularity has swung.
Rhiannon popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1974–2025
- Peak year (1999)
- 651
- Annual births at peak, across 52 years of records
Rhiannon popularity over time - boys
5 total births recorded since 1982 (Rhiannon as boys' name)
Rhiannon by decade
2000s is the heaviest window (4,075 births, 26% of the file).
2000s was Rhiannon's strongest decade.
4,075 babies received the name during that ten-year window, about 26% of all-time use.
Rhiannon births by decade
Total births in each ten-year window
- 1970s
1970s
1,666 births
- 1980s
1980s
3,276 births
- 1990s
1990s
3,833 births
- 2000s
2000s
4,075 births
- 2010s 1,444
2010s
1,444 births
- 2020s 1,245
2020s
1,245 births
What this shows Peak: 2000s at 4,075 births (26% of all-time use).
How Rhiannon compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Rhiannon's total volume
Rhiannon by state
Where Rhiannon concentrates geographically, total births since 1974
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 1,915 | 12.3% |
| #2 | Texas | | 1,029 | 6.6% |
| #3 | New York | | 741 | 4.8% |
| #4 | Pennsylvania | | 726 | 4.7% |
| #5 | Florida | | 624 | 4.0% |
| #6 | Illinois | | 610 | 3.9% |
| #7 | Ohio | | 591 | 3.8% |
| #8 | Arizona | | 460 | 3.0% |
1,915 of 15,539 births nationwide. Compared to a flat distribution across 46 reporting states.
Rhiannon appears in 46 states. Explore state details →
Frequently Asked Questions
How popular is the name Rhiannon? ▼
Where does Rhiannon sit in the SSA name archive? ▼
When was Rhiannon most popular? ▼
Where is Rhiannon most popular? ▼
How long has the name Rhiannon been used? ▼
What names are similar to Rhiannon? ▼
What to do with Rhiannon's data
- Rhiannon's decade-level peak was the 2000s (4,075 total births); usage has since declined to 1,245 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- California records the most Rhiannons (1,915 births) -- see the full state breakdown if geography matters to your decision. California names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Rhiannon
Nearby Names Like Rhiannon
Names with a similar sound, spelling, or feel to Rhiannon
Compare Rhiannon side by side: Rhiannon vs Rhianna Rhiannon vs Rhiana Rhiannon vs Rhiley
Related Names
Names with a similar popularity rank to Rhiannon
Nationwide names with similar peak year or record span
Two nationwide peer axes for Rhiannon: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1999)
Similar record span (~51 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1974–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Rhiannon draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.