Compare two names
Casmir and Casimir side by side: Casmir peaked in 1918 and Casimir in 1919; in 2025 they were given to 6 and 73 babies.
Casmir and Casimir, year by year
Girls and boys together; Casmir solid, Casimir dashed.
| Casmir | Casimir | |
|---|---|---|
| Births 2025 | 6 | 73 |
| Rank 2025 | #10,905 among boys’ names | #2,039 among boys’ names |
| Recorded since 1880 | 356 | 5,248 |
| Peak year | 1918 | 1919 |
| Girls | 4% | 0% |
| Alive, estimated | under 100 | 1,610 |
| Median age | n/a | 27 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.