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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

0.020%0.040%0.060%0.080%18801900192019401960198020002020#242 in 2009
Boys — share of U.S. male birthsSource: SSA, 1880–2025◆ peak 2009

Where Brennan is most popular

Alaska: fewer than 5 boys named Brennan in 2025AK—Maine: fewer than 5 boys named Brennan in 2025ME—Vermont: fewer than 5 boys named Brennan in 2025VT—New Hampshire: fewer than 5 boys named Brennan in 2025NH—Washington: fewer than 5 boys named Brennan in 2025WA—Idaho: fewer than 5 boys named Brennan in 2025ID—Montana: fewer than 5 boys named Brennan in 2025MT—North Dakota: fewer than 5 boys named Brennan in 2025ND—Minnesota: fewer than 5 boys named Brennan in 2025MN—Wisconsin: #618 (7 boys, 0.03% of boys born 2025)WI#618Michigan: fewer than 5 boys named Brennan in 2025MI—New York: #1055 (11 boys, 0.01% of boys born 2025)NY#1055Massachusetts: #789 (5 boys, 0.02% of boys born 2025)MA#789Rhode Island: fewer than 5 boys named Brennan in 2025RI—Oregon: fewer than 5 boys named Brennan in 2025OR—Nevada: fewer than 5 boys named Brennan in 2025NV—Wyoming: fewer than 5 boys named Brennan in 2025WY—South Dakota: fewer than 5 boys named Brennan in 2025SD—Iowa: #571 (5 boys, 0.04% of boys born 2025)IA#571Illinois: #805 (10 boys, 0.02% of boys born 2025)IL#805Indiana: fewer than 5 boys named Brennan in 2025IN—Ohio: #1111 (6 boys, 0.01% of boys born 2025)OH#1111Pennsylvania: #704 (12 boys, 0.02% of boys born 2025)PA#704New Jersey: #766 (8 boys, 0.02% of boys born 2025)NJ#766Connecticut: fewer than 5 boys named Brennan in 2025CT—California: #1438 (12 boys, 0.01% of boys born 2025)CA#1438Utah: fewer than 5 boys named Brennan in 2025UT—Colorado: #849 (5 boys, 0.02% of boys born 2025)CO#849Nebraska: fewer than 5 boys named Brennan in 2025NE—Missouri: #789 (6 boys, 0.02% of boys born 2025)MO#789Kentucky: fewer than 5 boys named Brennan in 2025KY—West Virginia: fewer than 5 boys named Brennan in 2025WV—Virginia: #563 (13 boys, 0.03% of boys born 2025)VA#563Maryland: fewer than 5 boys named Brennan in 2025MD—Delaware: fewer than 5 boys named Brennan in 2025DE—Arizona: fewer than 5 boys named Brennan in 2025AZ—New Mexico: fewer than 5 boys named Brennan in 2025NM—Kansas: fewer than 5 boys named Brennan in 2025KS—Arkansas: #555 (5 boys, 0.04% of boys born 2025)AR#555Tennessee: #672 (10 boys, 0.03% of boys born 2025)TN#672North Carolina: #645 (14 boys, 0.03% of boys born 2025)NC#645South Carolina: fewer than 5 boys named Brennan in 2025SC—District of Columbia: fewer than 5 boys named Brennan in 2025DC—Oklahoma: fewer than 5 boys named Brennan in 2025OK—Louisiana: #531 (8 boys, 0.04% of boys born 2025)LA#531Mississippi: fewer than 5 boys named Brennan in 2025MS—Alabama: fewer than 5 boys named Brennan in 2025AL—Georgia: fewer than 5 boys named Brennan in 2025GA—Hawaii: fewer than 5 boys named Brennan in 2025HI—Texas: #1169 (18 boys, 0.01% of boys born 2025)TX#1169Florida: #1126 (11 boys, 0.01% of boys born 2025)FL#1126
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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