US rank #12347 Girls' name Peak 2023 60 births

Thomasin — #12347 US girls' name

60 babies named Thomasin in U.S. Social Security records since 1963, with the highest year being 2023. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1960s51970s52020s50
#12347
of 17,661 girls in use

More common than 30% of names given to girls today.

2020s
Peak decade

83% of everyone ever named Thomasin was born in this single decade.

2023
Single peak year

16 babies were named Thomasin in 2023 — its busiest year on record.

What the Data Says About Thomasin

The Social Security Administration has registered 60 babies named Thomasin between 1963 and 2024, spanning 62 consecutive years of U.S. birth records. As a girl's name, Thomasin currently holds the #12347 rank among girls for 2024. The name reached its historical peak in 2023, when 16 babies received it in a single year.

Decade-level aggregation shows that Thomasin performed strongest in the 2020s, accumulating 50 births during that ten-year window. Across the 3 decades of recorded activity, Thomasin shows a stable profile with only moderate drift from its peak decade.

No etymological entry is currently available for Thomasin 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 60 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.

Thomasin at a glance

Outside the top 1,000

Total births

60

Since 1963

62 years of records

Peak year

2023

16 births that year

Strongest decade: 2020s

Current rank

#12,347

Among girls

As of 2024

Active since

1963

Recorded for 62 years

Last year on file: 2024

Thomasin popularity over time

Annual U.S. births registered with the Social Security Administration · 2024–1963

Outside the top 1,000
Peak year (2023)
16
Annual births at peak — across 62 years of records
05101520 2024202320222021202019711963 5

Thomasin by decade

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

Peak: 2020s
Peak decade
2020s
50 births that decade — 83% of Thomasin's all-time total
1960s51970s52020s50

Frequently Asked Questions

How popular is the name Thomasin?
60 babies have been named Thomasin since 1963. It currently ranks #12347 among girls. The peak year was 2023 with 16 births.
When was Thomasin most popular?
Thomasin was most popular in the 2020s decade with 50 total births. The single peak year was 2023.
How long has the name Thomasin been used?
Thomasin has been recorded in Social Security data since 1963, spanning 62 years of data through 2024.
What names are similar to Thomasin?
Names with a similar sound or spelling include Thomas, Thomasina, Thora, Thomasine, and 4 more. These share a common prefix and are also used for girls.

Keep exploring Thomasin

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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, 1963–2024 (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.