How rare is the name Cassius?

5,324 people in the United States have the first name Cassius, about 1 in 56,730. It ranks #3,752 of 53,615 first names in the 2020 Census, tied with 1 other.

first name

CASSIUS

#3,752

of 53,615 first names recorded in the 2020 Census

People
5,324
About
1 in 56,730
This common or more
83%
Who bears it

Of the 5,324 people named Cassius, 33.8% reported their origin as White, 31% as Black and 16.2% as Hispanic or Latino. 98.7% are male. These count how people described themselves on the 2020 Census, not where the name comes from.

Cassius peaked in 2021, when 612 babies got the name.

Births per year, SSA records 1880–2025
18802025
Peak year
2021
Births that year
612
In 2025*
504 ▼18%
Recorded as
almost entirely male

At least 9,766 babies have been given the name since 1880. Years SSA withheld, because fewer than 5 were born, are skipped rather than drawn as zero. * 2025 is the newest year published and it undercounts: a card application is filed some time after a birth.

Cassius by decade

Among all names given to American babies, its best decade was the 2020s, when it ranked #1,088. The largest share of babies named Cassius, 64.4%, were born in 2013 or later.

1880s#1,38982
1890s#2,47635
1900s#4,9315
1910s#4,25795
1920s#4,985112
1930s#6,72047
1940s#6,45359
1950s#9,21734
1960s#3,430309
1970s#5,553189
1980s#6,163211
1990s#4,806419
2000s#2,8771,225
2010s#1,4433,643
2020s#1,0883,301
Before 19011.2%
Greatest Generation 1901–272%
Silent Generation 1928–451.1%
Baby boom 1946–642%
Generation X 1965–803.7%
Millennials 1981–964.9%
Generation Z 1997–1220.7%
2013 and later64.4%

Rank counts both sexes together, among every name SSA recorded that decade; the number under it is births. The 2020s run only to 2025. Generation years follow Pew Research Center, which has not named a generation after 2012.

Where Cassius is most common

Compared with all babies born in each state since 1910, Cassius has been most common in Washington (3.1×), Colorado (2.4×), and Nevada (2.3×), and least common in Alabama (0.35×).

7,016 births recorded by state, 1910–2025. 2× means twice as common as nationally. States with fewer than 30 such births are left blank, and SSA withholds any year with fewer than 5 in a state, so small states read low.

Exactly as common as Cassius

1 other first name also has 5,324 people.

Also a last name

As a last name, Cassius ranks #150,205 of 156,621, with 109 people. See Cassius as a last name

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