Winthrop — boys' name
1,178 babies named Winthrop in U.S. Social Security records since 1883, with the highest year being 1915. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
18% of everyone ever named Winthrop was born in this single decade.
48 babies were named Winthrop in 1915 — its busiest year on record.
What the Data Says About Winthrop
The Social Security Administration has registered 1,178 babies named Winthrop between 1883 and 2023, spanning 141 consecutive years of U.S. birth records. As a boy's name, Winthrop currently falls outside the top 1,000 boys' names for 2023. The name reached its historical peak in 1915, when 48 babies received it in a single year.
Decade-level aggregation shows that Winthrop performed strongest in the 1910s, accumulating 216 births during that ten-year window. Across the 14 decades of recorded activity, Winthrop shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Massachusetts, which accounts for 200 births — the largest state-level total in the dataset — followed by New York and Connecticut. In total, SSA state-level files list Winthrop in 3 of the 51 U.S. reporting jurisdictions.
No etymological entry is currently available for Winthrop 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 1,178 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.
Winthrop at a glance
Last recorded 2023Peak year
Current rank
Active since
Winthrop popularity over time
Annual U.S. births registered with the Social Security Administration · 2023–1883
- Peak year (1915)
- 48
- Annual births at peak — across 141 years of records
No longer in the modern top-1000 — last recorded 2023.
1,178 total births across 141 years of SSA records. Peaked in 1915 with 48 births in a single year.
Winthrop by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 1910s
- 216 births that decade — 18% of Winthrop's all-time total
Winthrop decade highlights
- Peak decade 216 births
- Runner-up 213 births
- Modern era share 2010s + 2020s
- Decades tracked with recorded births
1910s was Winthrop's strongest decade
216 babies received the name during that ten-year window — about 18% of all-time use.
Winthrop by state
Where Winthrop concentrates geographically — total births since 1883
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Massachusetts | | 200 | 17.0% |
| #2 | New York | | 47 | 4.0% |
| #3 | Connecticut | | 17 | 1.4% |
200 of 1,178 births nationwide. Compared to a flat distribution across 3 reporting states.
Top 5 states
- Massachusetts 17.0% of nationwide
- New York 4.0% of nationwide
- Connecticut 1.4% of nationwide
Recorded in 3 of 51 SSA jurisdictions
Massachusetts accounts for 17.0% 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, 1883–2023 (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.