Girls' name · since 1977
Riannon
Since 1977, U.S. Social Security records show 250 babies named Riannon, peaking in 1987. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #17,607 of 72,339
- all-time among girls
- 250
- born since 1977
- 1990s
- peak decade
250 girls have been named Riannon since 1977, though it isn't currently a top-ranked name.
Riannon has 250 recorded births among girls since 1977, per the U.S. Social Security Administration, though it falls outside today's most-used girls names, busiest in the 1990s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1977 to 2006.
- #17,607 of 72,339 all-time among girls
- 250 born since 1977
- 1990s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Riannon ranks #17,607 of 72,339 girls' names by all-time recorded births (highest first). 250 born since 1977, peaking in the 1990s.
- #17,607 of 72,339
- all-time among girls
- 250
- born since 1977
- 1990s
- peak decade
Riannon's 250 recorded births place it above 75.65% of the 72,339 girls names in the full SSA archive.
No state rows cleared SSA’s public reporting threshold for this name.
Riannon's usage pattern, beyond the headline number
Splitting Riannon's full recorded timeline at 1993, 48% of its total births fall in the more recent half of the record versus 52% in the earlier half -- a fairly even split across the full record. Its quietest year on record was 1990, with just 5 recorded births -- worth weighing against the 1987 peak of 14 to see the full range of the name's swing in popularity.
Riannon popularity over time
Annual U.S. births registered with the Social Security Administration · 1977–2006
- Peak year (1987)
- 14
- Annual births at peak, across 30 years of records
Riannon by decade
1990s is the heaviest window (82 births, 33% of the file).
1990s was Riannon's strongest decade.
82 babies received the name during that ten-year window, about 33% of all-time use.
Riannon births by decade
Total births in each ten-year window
- 1970s 27
1970s
27 births
- 1980s
1980s
78 births
- 1990s
1990s
82 births
- 2000s
2000s
63 births
What this shows Peak: 1990s at 82 births (33% of all-time use).
Frequently Asked Questions
How popular is the name Riannon? ▼
Where does Riannon sit in the SSA name archive? ▼
When was Riannon most popular? ▼
How long has the name Riannon been used? ▼
What names are similar to Riannon? ▼
What to do with Riannon's data
- Riannon's usage has stayed within range of its 1990s decade-level peak (82 total births) through the 2000s (63) -- a comparatively stable name, not a fading trend.
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Riannon
Nearby Names Like Riannon
Names with a similar sound, spelling, or feel to Riannon
Compare Riannon side by side: Riannon vs Ria Riannon vs Rianna Riannon vs Rian
Related Names
Names with a similar number of total births
Nationwide names with similar peak year or record span
Two nationwide peer axes for Riannon: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1987)
Similar record span (~29 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, 1977–2006 (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 Riannon 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.