Compare two names
Brennen and Brennan side by side: Brennen peaked in 2009 and Brennan in 2009; in 2025 they were given to 20 and 236 babies.
Brennen and Brennan, year by year
Girls and boys together; Brennen solid, Brennan dashed.
| Brennen | Brennan | |
|---|---|---|
| Births 2025 | 20 | 236 |
| Rank 2025 | #4,881 among boys’ names | #1,003 among boys’ names |
| Recorded since 1880 | 9,217 | 35,487 |
| Peak year | 2009 | 2009 |
| Girls | 2% | 6% |
| Alive, estimated | 9,000 | 34,600 |
| Median age | 23 | 23 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.