Compare two names
Rosilyn and Rosalyn side by side: Rosilyn peaked in 1949 and Rosalyn in 1955; in 2025 they were given to 0 and 237 babies.
Rosilyn and Rosalyn, year by year
Girls and boys together; Rosilyn solid, Rosalyn dashed.
| Rosilyn | Rosalyn | |
|---|---|---|
| Births 2025 | 0 | 237 |
| Rank 2025 | not ranked | #1,051 among girls’ names |
| Recorded since 1880 | 642 | 23,278 |
| Peak year | 1949 | 1955 |
| Girls | 100% | 100% |
| Alive, estimated | 513 | 16,900 |
| Median age | 59 | 50 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.