Recorded 1931–2021 Girls' name Peak 2001 255 births

Gwynneth — girls' name

255 babies named Gwynneth in U.S. Social Security records since 1931, with the highest year being 2001. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1930s61940s121950s181960s51970s51990s342000s1072010s622020s6
2000s
Peak decade

42% of everyone ever named Gwynneth was born in this single decade.

2001
Single peak year

16 babies were named Gwynneth in 2001 — its busiest year on record.

What the Data Says About Gwynneth

The Social Security Administration has registered 255 babies named Gwynneth between 1931 and 2021, spanning 91 consecutive years of U.S. birth records. As a girl's name, Gwynneth currently falls outside the top 1,000 girls' names for 2021. The name reached its historical peak in 2001, when 16 babies received it in a single year.

Decade-level aggregation shows that Gwynneth performed strongest in the 2000s, accumulating 107 births during that ten-year window. Across the 9 decades of recorded activity, Gwynneth shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 5 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Gwynneth in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Gwynneth 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 255 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.

Gwynneth at a glance

Last recorded 2021

Total births

255

Since 1931

91 years of records

Peak year

2001

16 births that year

Strongest decade: 2000s

Current rank

Unranked

Outside the modern top-1,000

As of 2021

Active since

1931

Recorded for 91 years

Last year on file: 2021

Gwynneth popularity over time

Annual U.S. births registered with the Social Security Administration · 2021–1931

Last recorded 2021
Peak year (2001)
16
Annual births at peak — across 91 years of records
05101520 202120142010200620021998196319481931 6

Gwynneth by decade

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

Peak: 2000s
Peak decade
2000s
107 births that decade — 42% of Gwynneth's all-time total
1930s61940s121950s181960s51970s51990s342000s1072010s622020s6

Gwynneth by state

Where Gwynneth concentrates geographically — total births since 1931

Geographically diffuse
Top 1 states by recorded births for the name Gwynneth
Rank State Visual share Births Share of total
#1 California
5 2.0%
California share of Gwynneth's total US births 2.0%

5 of 255 births nationwide.

Frequently Asked Questions

How popular is the name Gwynneth?
255 babies have been named Gwynneth since 1931. It was last recorded in 2021. The peak year was 2001 with 16 births.
When was Gwynneth most popular?
Gwynneth was most popular in the 2000s decade with 107 total births. The single peak year was 2001.
Where is Gwynneth most popular?
The top states for the name Gwynneth are California (5 births).
How long has the name Gwynneth been used?
Gwynneth has been recorded in Social Security data since 1931, spanning 91 years of data through 2021.
What names are similar to Gwynneth?
Names with a similar sound or spelling include Gwyneth, Gwyn, Gwynne, Gwynn, 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, 1931–2021 (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.