Rhiannan — girls' name
171 babies named Rhiannan in U.S. Social Security records since 1978, with the highest year being 1998. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
The verdict
171 girls have been named Rhiannan since 1978, peaking in the 1990s, last recorded in 2009.
- 171
- total births
- 1978–2009
- years on record
- 1990s
- peak decade
- 41%
- born in that decade
41% of everyone ever named Rhiannan was born in this single decade.
14 babies were named Rhiannan in 1998 — its busiest year on record.
What the Data Says About Rhiannan
The Social Security Administration has registered 171 babies named Rhiannan between 1978 and 2009, spanning 32 consecutive years of U.S. birth records. As a girl's name, Rhiannan currently falls outside the top 1,000 girls' names for 2009. The name reached its historical peak in 1998, when 14 babies received it in a single year.
Decade-level aggregation shows that Rhiannan performed strongest in the 1990s, accumulating 70 births during that ten-year window. Across the 4 decades of recorded activity, Rhiannan shows a stable profile with only moderate drift from its peak decade.
No etymological entry is currently available for Rhiannan in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 171 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.
Rhiannan at a glance
Last recorded 2009Peak year
Current rank
Active since
Rhiannan popularity over time
Annual U.S. births registered with the Social Security Administration · 2009–1978
- Peak year (1998)
- 14
- Annual births at peak — across 32 years of records
No longer in the modern top-1000 — last recorded 2009.
171 total births across 32 years of SSA records. Peaked in 1998 with 14 births in a single year.
Rhiannan by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1990s
- 70 births that decade — 41% of Rhiannan's all-time total
Rhiannan decade highlights
- Peak decade 70 births
- Runner-up 58 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1990s was Rhiannan's strongest decade
70 babies received the name during that ten-year window — about 41% of all-time use.
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Data Sources
Data as of 2024. Source: U.S. Social Security Administration (SSA).
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1978–2009 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.
State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.