Compare two names
Kaius and Caius side by side: Kaius peaked in 2025 and Caius in 2025; in 2025 they were given to 216 and 254 babies.
Kaius and Caius, year by year
Girls and boys together; Kaius solid, Caius dashed.
| Kaius | Caius | |
|---|---|---|
| Births 2025 | 216 | 254 |
| Rank 2025 | #1,029 among boys’ names | #927 among boys’ names |
| Recorded since 1880 | 2,011 | 2,329 |
| Peak year | 2025 | 2025 |
| Girls | 0% | 0% |
| Alive, estimated | 2,000 | 2,310 |
| Median age | 6 | 7 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.