Compare two names
Cas and Caius side by side: Cas peaked in 2020 and Caius in 2025; in 2025 they were given to 0 and 254 babies.
Cas and Caius, year by year
Girls and boys together; Cas solid, Caius dashed.
| Cas | Caius | |
|---|---|---|
| Births 2025 | 0 | 254 |
| Rank 2025 | not ranked | #927 among boys’ names |
| Recorded since 1880 | 181 | 2,329 |
| Peak year | 2020 | 2025 |
| Girls | 0% | 0% |
| Alive, estimated | 138 | 2,310 |
| Median age | 9 | 7 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.