Compare two names
Hennessy and Hennessey side by side: Hennessy peaked in 2019 and Hennessey in 2015; in 2025 they were given to 37 and 0 babies.
Hennessy and Hennessey, year by year
Girls and boys together; Hennessy solid, Hennessey dashed.
| Hennessy | Hennessey | |
|---|---|---|
| Births 2025 | 37 | 0 |
| Rank 2025 | #3,935 among girls’ names | not ranked |
| Recorded since 1880 | 1,630 | 383 |
| Peak year | 2019 | 2015 |
| Girls | 96% | 100% |
| Alive, estimated | 1,620 | 379 |
| Median age | 15 | 17 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.