Thy — girls' name
366 babies named Thy in U.S. Social Security records since 1979, with the highest year being 1991. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
29% of everyone ever named Thy was born in this single decade.
18 babies were named Thy in 1991 — its busiest year on record.
What the Data Says About Thy
The Social Security Administration has registered 366 babies named Thy between 1979 and 2018, spanning 40 consecutive years of U.S. birth records. As a girl's name, Thy currently falls outside the top 1,000 girls' names for 2018. The name reached its historical peak in 1991, when 18 babies received it in a single year.
Decade-level aggregation shows that Thy performed strongest in the 1980s, accumulating 106 births during that ten-year window. Across the 5 decades of recorded activity, Thy shows notable generational variation in parental adoption. Geographically, the name is most concentrated in California, which accounts for 69 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Thy in 1 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Thy 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 366 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.
Thy at a glance
Last recorded 2018Peak year
Current rank
Active since
Thy popularity over time
Annual U.S. births registered with the Social Security Administration · 2018–1979
- Peak year (1991)
- 18
- Annual births at peak — across 40 years of records
No longer in the modern top-1000 — last recorded 2018.
366 total births across 40 years of SSA records. Peaked in 1991 with 18 births in a single year.
Thy by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1980s
- 106 births that decade — 29% of Thy's all-time total
Thy decade highlights
- Peak decade 106 births
- Runner-up 100 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1980s was Thy's strongest decade
106 babies received the name during that ten-year window — about 29% of all-time use.
Thy by state
Where Thy concentrates geographically — total births since 1979
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 69 | 18.9% |
69 of 366 births nationwide.
Top 5 states
- California 18.9% of nationwide
Recorded in 1 of 51 SSA jurisdictions
California accounts for 18.9% of all recorded births nationwide — a relatively diffuse profile for this name.
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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, 1979–2018 (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.