Declining since 2021, #5,399 for boys today.
Popularity of Legion since 2003
Babies named Legion per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 2000s | 40 |
| 2010s | 211 |
| 2020s | 119 |
Meaning & origin
Legion is a rare and striking name, entering U.S. birth records in 2003. It reached its peak popularity in 2021, ranking #5399 that year, but has since fallen in use, with a 2025 rank of #5399 and a 1-in-100,475 incidence. The name's origin is heavily tied to the Latin word for a military unit and the biblical reference in Mark 5:9, where a demon declares 'My name is Legion: for we are many.' This dual association gives Legion a bold, almost mythic quality that appeals to parents drawn to powerful, concept-driven names. Texas is the only state among the top states where the name shows notable usage, suggesting a regional preference. While its trajectory has been falling since 2021, Legion remains a distinctive choice for those seeking a name with historical and cultural weight.
Legion comes from the Latin word 'legio', meaning a military unit of several thousand soldiers. The name entered English via the Bible, where in the Gospel of Mark 5:9 a demon says 'My name is Legion: for we are many.' Its use as a given name is a modern phenomenon, likely inspired by the biblical reference or the term's militant resonance. The name has been recorded in U.S. births since 2003, reflecting a trend of bold, concept-driven naming.
Where Legion is most popular
Births per 100,000 boys by state, 2025. The lightest shade means too few recorded births.
Sibling names for Legion
Names that share Legion's style, for a brother or sister.
