Recorded 1978–2009 Girls' name Peak 1998 171 births

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.

1970s71980s361990s702000s58

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
1990s
Peak decade

41% of everyone ever named Rhiannan was born in this single decade.

1998
Single peak year

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 2009

Total births

171

Since 1978

32 years of records

Peak year

1998

14 births that year

Strongest decade: 1990s

Current rank

Unranked

Outside the modern top-1,000

As of 2009

Active since

1978

Recorded for 32 years

Last year on file: 2009

Rhiannan popularity over time

Annual U.S. births registered with the Social Security Administration · 2009–1978

Last recorded 2009
Peak year (1998)
14
Annual births at peak — across 32 years of records
46810121416 200920052002199919951991198619821978 7

Rhiannan by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1990s
Peak decade
1990s
70 births that decade — 41% of Rhiannan's all-time total
1970s71980s361990s702000s58

Frequently Asked Questions

How popular is the name Rhiannan?
171 babies have been named Rhiannan since 1978. It was last recorded in 2009. The peak year was 1998 with 14 births.
When was Rhiannan most popular?
Rhiannan was most popular in the 1990s decade with 70 total births. The single peak year was 1998.
How long has the name Rhiannan been used?
Rhiannan has been recorded in Social Security data since 1978, spanning 32 years of data through 2009.
What names are similar to Rhiannan?
Names with a similar sound or spelling include Rhiannon, Rhianna, Rhiana, Rhiley, and 4 more. These share a common prefix and are also used for girls.

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.