Compare two names
Sonji and Sonja side by side: Sonji peaked in 1966 and Sonja in 1967; in 2025 they were given to 0 and 37 babies.
Sonji and Sonja, year by year
Girls and boys together; Sonji solid, Sonja dashed.
| Sonji | Sonja | |
|---|---|---|
| Births 2025 | 0 | 37 |
| Rank 2025 | not ranked | #3,965 among girls’ names |
| Recorded since 1880 | 904 | 39,557 |
| Peak year | 1966 | 1967 |
| Girls | 100% | 99.9% |
| Alive, estimated | 815 | 31,800 |
| Median age | 59 | 58 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.