Compare two names
Gillian and Jillian side by side: Gillian peaked in 1999 and Jillian in 1982; in 2025 they were given to 47 and 177 babies.
Gillian and Jillian, year by year
Girls and boys together; Gillian solid, Jillian dashed.
| Gillian | Jillian | |
|---|---|---|
| Births 2025 | 47 | 177 |
| Rank 2025 | #3,306 among girls’ names | #1,266 among girls’ names |
| Recorded since 1880 | 16,127 | 83,424 |
| Peak year | 1999 | 1982 |
| Girls | 99.6% | 99.7% |
| Alive, estimated | 15,600 | 81,600 |
| Median age | 27 | 31 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.