Boys' name · since 1911
Cosimo
1,016 babies named Cosimo in U.S. Social Security records since 1911, with the highest year being 1927. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #5,094 of 45,481
- all-time among boys
- #5,626 of 13,930
- 2025 SSA year
- 1,016
- born since 1911
- 1920s
- peak decade
1,016 babies have been named Cosimo since 1911, making it today's #5626 boys' name.
Cosimo has 1,016 recorded births among boys since 1911, per the U.S. Social Security Administration, ranked #5626 as of the latest data, more common than 60% of boys, busiest in the 1920s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1911 to 2025.
- #5,094 of 45,481 all-time among boys
- #5,626 of 13,930 2025 SSA year
- 1,016 born since 1911
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Cosimo ranks #5,094 of 45,481 boys' names by all-time recorded births (highest first) and #5,626 of 13,930 among boys' names in 2025. 1,016 born since 1911, peaking in the 1920s.
- #5,094 of 45,481
- all-time among boys
- #5,626 of 13,930
- 2025 SSA year
- 1,016
- born since 1911
- 1920s
- peak decade
Cosimo's 1,016 recorded births place it above 88.79% of the 45,481 boys names in the full SSA archive.
The state file records this name in 4 jurisdictions, led by New York.
How Cosimo compares
1,016 Top 31% higher than 69% of 13,930 names currently given to boys
Based on all-time total births among currently-ranked boys names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Cosimo's all-time total is 175% above the median boys name, and Liam still leads by a wide margin.
| Metric | Cosimo | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 1,016 | 369 | 358,536 |
| Peak-year births | 30 | 34 | 22,252 |
Cosimo's usage pattern, beyond the headline number
Divide Cosimo's SSA record in two at 1962 and the more recent half accounts for 42% of all births, the earlier half the remaining 58%, a genuinely balanced usage pattern. Its calmest year was 1911, with only 5 births recorded -- set against the 1927 peak of 30, that's the full swing in one name's fortunes.
Cosimo popularity over time
Annual U.S. births registered with the Social Security Administration · 1911–2025
- Peak year (1927)
- 30
- Annual births at peak, across 115 years of records
Cosimo by decade
1920s is the heaviest window (218 births, 21% of the file).
1920s was Cosimo's strongest decade.
218 babies received the name during that ten-year window, about 21% of all-time use.
Cosimo births by decade
Total births in each ten-year window
- 1910s
1910s
123 births
- 1920s
1920s
218 births
- 1930s
1930s
91 births
- 1940s
1940s
92 births
- 1950s 70
1950s
70 births
- 1960s 62
1960s
62 births
- 1970s 40
1970s
40 births
- 1980s 50
1980s
50 births
- 1990s 37
1990s
37 births
- 2000s 68
2000s
68 births
- 2010s 80
2010s
80 births
- 2020s 85
2020s
85 births
What this shows Peak: 1920s at 218 births (21% of all-time use).
How Cosimo compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 boys names closest to Cosimo's total volume
Cosimo by state
Where Cosimo concentrates geographically, total births since 1911
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | New York | | 191 | 18.8% |
| #2 | Pennsylvania | | 30 | 3.0% |
| #3 | New Jersey | | 20 | 2.0% |
| #4 | California | | 17 | 1.7% |
191 of 1,016 births nationwide. Compared to a flat distribution across 4 reporting states.
Frequently Asked Questions
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What to do with Cosimo's data
- Cosimo's usage has stayed within range of its 1920s decade-level peak (218 total births) through the 2020s (85) -- a comparatively stable name, not a fading trend.
- New York records the most Cosimos (191 births) -- see the full state breakdown if geography matters to your decision. New York names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Cosimo
Nearby Names Like Cosimo
Names with a similar sound, spelling, or feel to Cosimo
Compare Cosimo side by side: Cosimo vs Cosmo Cosimo vs Cosme Cosimo vs Costa
Related Names
Names with a similar popularity rank to Cosimo
Nationwide names with similar peak year or record span
Two nationwide peer axes for Cosimo: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1927)
Similar record span (~114 yrs)
Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.
Data Sources
Data as of August 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1911–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Cosimo draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.