Brentley is a distinctive boys' name in United States, ranking #4845 in 2005 with 17 recorded births. This places Brentley in the top 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 413 births ranking #637. Since 1996, the popularity has increased by 70.0%. In 2005, approximately 1 in every 117,479 boys born was named Brentley. FALLING Recent data shows the name is currently falling.