Boy name
Cassius
As of 2025, Cassius ranks #582 among American boys' names, according to Social Security records. 504 boys received the name that year. Popularity is fading: #488 five years ago, #582 now. SSA records for Cassius go back to 1880; the peak came in 1880 at #425, with 17 babies named that year. Geographically, it's strongest in Maine, where it ranks #172 among boy names.
Rankings
2025 rank
#582
among boy names
Trend
Falling
last 5 years
All-time peak
#425
in 1880 (1880s)
Babies in 2025
504
boys named Cassius
Cassius popularity, 1880–2025
Where Cassius is most popular
Share of boys born in 2025:lowhighno data (< 5 births)
Strongest states: Hawaii (#180), Maine (#172), New Mexico (#270)
Uniqueness score
43/ 100Balanced
everywhereone of a kind
Well known, but far from crowded — the middle of the field. Based on how many babies per birth were named Cassius in the most recent year of SSA data.