Compare two names
Isaiah and Isiah side by side: Isaiah peaked in 2006 and Isiah in 2001; in 2025 they were given to 5,273 and 120 babies.
Isaiah and Isiah, year by year
Girls and boys together; Isaiah solid, Isiah dashed.
| Isaiah | Isiah | |
|---|---|---|
| Births 2025 | 5,273 | 120 |
| Rank 2025 | #57 among boys’ names | #1,480 among boys’ names |
| Recorded since 1880 | 254,710 | 24,721 |
| Peak year | 2006 | 2001 |
| Girls | 0.3% | 0.0% |
| Alive, estimated | 246,000 | 19,300 |
| Median age | 18 | 26 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.