Boy name
Brennan
Brennan holds the #1002 spot on the 2025 list of the most popular boy names in the U.S. That amounts to 226 newborn boys in a single year. The name has been cooling off, slipping from #764 in 2020 to #1002 today. Its strongest year on record was 2009 (#242 nationally, 1,464 newborns), in a data series reaching back to 1916. The name's biggest fan base is in Louisiana (#531 there in 2025).
Rankings
2025 rank
#1002
among boy names
Trend
Falling
last 5 years
All-time peak
#242
in 2009 (2000s)
Babies in 2025
226
boys named Brennan
Brennan popularity, 1880–2025
Where Brennan is most popular
Share of boys born in 2025:lowhighno data (< 5 births)
Strongest states: Louisiana (#531), Arkansas (#555), Iowa (#571)
Uniqueness score
53/ 100Balanced
everywhereone of a kind
Well known, but far from crowded — the middle of the field. Based on how many babies per birth were named Brennan in the most recent year of SSA data.
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