Total births
9,736
Boys' name · since 1880
Cassius
9,736 babies named Cassius in U.S. Social Security records since 1880, with the highest year being 2021. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
- #569
- among boys today
- 9,736
- born since 1880
- 2010s
- peak decade
- 96%
- more common than other boys
Cassius currently ranks #569 among boys' names in America, with 9,736 babies recorded since 1880.
Cassius has 9,736 recorded births among boys since 1880, per the U.S. Social Security Administration, ranked #569 as of the latest data, more common than 96% of boys, busiest in the 2010s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1880 to 2025.
- #569 among boys today
- 9,736 born since 1880
- 2010s peak decade
- 96% more common than other boys
Data updated Jun 2026
The verdict
Cassius is currently the #569 boys' name in America, more common than 96% of boys - 9,736 born since 1880, peaking in the 2010s.
- #569
- among boys today
- 9,736
- born since 1880
- 2010s
- peak decade
- 96%
- more common than other boys
Cassius vs. every other boys name in current SSA rankings
#569
of 14,294 boys in use
More common than 96% of names given to boys today.
2010s
Peak decade
37% of everyone ever named Cassius was born in this single decade.
2021
Single peak year
607 babies were named Cassius in 2021 - its busiest year on record.
How Cassius compares
9,736 Top 8% higher than 92% of 14,294 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
Cassius's all-time total is 27x the median boys name, and Liam still leads by a wide margin.
| Metric | Cassius | Median boys name (Elchonon) | #1 boys name (Liam) |
|---|---|---|---|
| All-time total births | 9,736 | 367 | 358,536 |
| Peak-year births | 607 | 23 | 22,252 |
Cassius's usage pattern, beyond the headline number
Cassius splits its recorded history at 1967: 93% of all births land in the more recent half, 7% in the earlier half, a lean toward present-day use rather than a passing spike. The single quietest year was 1887 (5 births) -- compare that against the 2021 peak of 607 for a sense of just how much the name's popularity has swung.
Cassius at a glance
Top 1,000 boys' namePeak year
2021
Current rank
#569
Active since
1880
Cassius popularity over time - boys
Annual U.S. births registered with the Social Security Administration · 1880–2025
- Peak year (2021)
- 607
- Annual births at peak, across 146 years of records
Cassius popularity over time - girls
30 total births recorded since 2017 (Cassius as girls' name)
Cassius by decade
Total births in each ten-year window, peak vs trough at a glance
2010s was Cassius's strongest decade.
3,635 babies received the name during that ten-year window, about 37% of all-time use.
Cassius births by decade
Total births in each ten-year window
- 1880s 82
1880s
82 births
- 1890s 35
1890s
35 births
- 1900s 5
1900s
5 births
- 1910s 95
1910s
95 births
- 1920s 112
1920s
112 births
- 1930s 47
1930s
47 births
- 1940s 59
1940s
59 births
- 1950s 34
1950s
34 births
- 1960s 309
1960s
309 births
- 1970s 189
1970s
189 births
- 1980s 211
1980s
211 births
- 1990s 419
1990s
419 births
- 2000s 1,225
2000s
1,225 births
- 2010s
2010s
3,635 births
- 2020s
2020s
3,279 births
What this shows Peak: 2010s at 3,635 births (37% of all-time use).
How Cassius 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 Cassius's total volume
Cassius vs 15 similarly-sized boys names
Cassius by state
Where Cassius concentrates geographically, total births since 1880
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | California | | 1,057 | 10.9% |
| #2 | Texas | | 669 | 6.9% |
| #3 | New York | | 444 | 4.6% |
| #4 | Washington | | 360 | 3.7% |
| #5 | Florida | | 334 | 3.4% |
| #6 | Ohio | | 305 | 3.1% |
| #7 | Michigan | | 285 | 2.9% |
| #8 | Pennsylvania | | 276 | 2.8% |
California share of Cassius's total US births 10.9%
Even split
1,057 of 9,736 births nationwide. Compared to a flat distribution across 45 reporting states.
Cassius appears in 45 states. Explore state details →
Frequently Asked Questions
How popular is the name Cassius? ▼
9,736 babies have been named Cassius since 1880. It currently ranks #569 among boys. The peak year was 2021 with 607 births.
When was Cassius most popular? ▼
Cassius was most popular in the 2010s decade with 3,635 total births. The single peak year was 2021.
Where is Cassius most popular? ▼
The top states for the name Cassius are California (1,057 births), Texas (669 births), New York (444 births).
How long has the name Cassius been used? ▼
Records for Cassius go back to 1880, giving 146 years of history through 2025.
What names are similar to Cassius? ▼
Names with a similar sound or spelling include Casey, Cash, Cason, Case, and 4 more. These share a common prefix and are also used for boys.
What to do with Cassius's data
- Cassius's usage has stayed within range of its 2010s decade-level peak (3,635 total births) through the 2020s (3,279) -- a comparatively stable name, not a fading trend.
- California records the most Cassiuss (1,057 births) -- see the full state breakdown if geography matters to your decision. California names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Cassius
Nearby Names Like Cassius
Names with a similar sound, spelling, or feel to Cassius
Casey Boy
#311 116,675 births
Cash Boy
#316 27,705 births
Cason Boy
#856 11,308 births
Case Boy
#724 9,926 births
Casen Boy
#793 6,633 births
Compare Cassius side by side: Cassius vs Casey Cassius vs Cash Cassius vs Cason
Related Names
Names with a similar popularity rank to Cassius
Zachariah #568
31,238 births · Peak 1992
Ford #570
11,009 births · Peak 2021
Kason #567
14,904 births · Peak 2019
Soren #571
10,946 births · Peak 2025
Armando #566
76,515 births · Peak 1997
Allen #572
271,796 births · Peak 1951
Scott #565
774,997 births · Peak 1971
Louie #573
30,992 births · Peak 2024
Data Sources
Data as of June 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, 1880–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Cassius: #569 Boys' Name - 9,736 Births, Peak 2021." NameAlmanac. Accessed via https://namealmanac.com/name/cassius. Licensed CC BY-SA 4.0.
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 Cassius 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 June 2026.