Boys' name · since 1881
Casimiro
Since 1881, U.S. Social Security records show 1,084 babies named Casimiro, peaking in 1921. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #4,876 of 45,481
- all-time among boys
- #10,716 of 13,930
- 2025 SSA year
- 1,084
- born since 1881
- 1920s
- peak decade
Yes -- Casimiro is the #10716 most popular boys' name in the U.S. today, with 1,084 recorded since 1881.
According to the U.S. Social Security Administration, Casimiro has been recorded 1,084 times among boys since 1881, currently ranked #10716 nationally and more common than 23% of boys, with its heaviest use in the 1920s. This profile covers year-by-year birth trends, decade totals, and state-level distribution, all derived directly from SSA birth-registration files spanning 1881 to 2025.
- #4,876 of 45,481 all-time among boys
- #10,716 of 13,930 2025 SSA year
- 1,084 born since 1881
- 1920s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Casimiro ranks #4,876 of 45,481 boys' names by all-time recorded births (highest first) and #10,716 of 13,930 among boys' names in 2025. 1,084 born since 1881, peaking in the 1920s.
- #4,876 of 45,481
- all-time among boys
- #10,716 of 13,930
- 2025 SSA year
- 1,084
- born since 1881
- 1920s
- peak decade
Casimiro's 1,084 recorded births place it above 89.27% of the 45,481 boys names in the full SSA archive.
The state file records this name in 3 jurisdictions, led by Texas.
How Casimiro compares
1,084 Top 30% higher than 70% 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
Casimiro's all-time total is 194% above the median boys name, and Liam still leads by a wide margin.
| Metric | Casimiro | Median boys name (Takari) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 1,084 | 369 | 358,536 |
| Peak-year births | 28 | 34 | 22,252 |
Casimiro's usage pattern, beyond the headline number
Divide Casimiro's SSA record in two at 1964 and the more recent half accounts for 44% of all births, the earlier half the remaining 56%, a genuinely balanced usage pattern. Its calmest year was 1938, with only 5 births recorded -- set against the 1921 peak of 28, that's the full swing in one name's fortunes.
Casimiro popularity over time
Annual U.S. births registered with the Social Security Administration · 1881–2025
- Peak year (1921)
- 28
- Annual births at peak, across 145 years of records
Casimiro by decade
1920s is the heaviest window (170 births, 16% of the file).
1920s was Casimiro's strongest decade.
170 babies received the name during that ten-year window, about 16% of all-time use.
Casimiro births by decade
Total births in each ten-year window
- 1880s 6
1880s
6 births
- 1910s
1910s
78 births
- 1920s
1920s
170 births
- 1930s
1930s
113 births
- 1940s
1940s
96 births
- 1950s
1950s
115 births
- 1960s
1960s
98 births
- 1970s
1970s
104 births
- 1980s
1980s
103 births
- 1990s
1990s
73 births
- 2000s
2000s
74 births
- 2010s 27
2010s
27 births
- 2020s 27
2020s
27 births
What this shows Peak: 1920s at 170 births (16% of all-time use).
How Casimiro 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 Casimiro's total volume
Casimiro by state
Where Casimiro concentrates geographically, total births since 1881
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Texas | | 436 | 40.2% |
| #2 | California | | 31 | 2.9% |
| #3 | New Mexico | | 5 | 0.5% |
436 of 1,084 births nationwide. Compared to a flat distribution across 3 reporting states.
Frequently Asked Questions
How popular is the name Casimiro? ▼
Where does Casimiro sit in the SSA name archive? ▼
When was Casimiro most popular? ▼
Where is Casimiro most popular? ▼
How long has the name Casimiro been used? ▼
What names are similar to Casimiro? ▼
What to do with Casimiro's data
- Casimiro's decade-level peak was the 1920s (170 total births); usage has since declined to 27 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Texas records the most Casimiros (436 births) -- see the full state breakdown if geography matters to your decision. Texas names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Casimiro
Nearby Names Like Casimiro
Names with a similar sound, spelling, or feel to Casimiro
Compare Casimiro side by side: Casimiro vs Casey Casimiro vs Cash Casimiro vs Cason
Related Names
Names with a similar popularity rank to Casimiro
Nationwide names with similar peak year or record span
Two nationwide peer axes for Casimiro: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~1921)
Similar record span (~144 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, 1881–2025 (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 Casimiro 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.