Brentley has been given to about 4,548 people in the United States since 1880. It was most common in 2014, which makes it a millennial-parent name.
Its best year was 2014, when 436 babies were given the name, ranking 637th. The typical living American called Brentley is about 11 years old today. It is relatively most common in Kentucky, where it accounts for 0.01% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.