Compare two names
Kayo and Kai side by side: Kayo peaked in 2009 and Kai in 2022; in 2025 they were given to 11 and 4,002 babies.
Kayo and Kai, year by year
Girls and boys together; Kayo solid, Kai dashed.
| Kayo | Kai | |
|---|---|---|
| Births 2025 | 11 | 4,002 |
| Rank 2025 | #7,429 among boys’ names | #93 among boys’ names |
| Recorded since 1880 | 284 | 78,710 |
| Peak year | 2009 | 2022 |
| Girls | 2% | 11% |
| Alive, estimated | 274 | 77,700 |
| Median age | 14 | 9 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.