Brentley is a distinctive boys' name in United States, ranking #637 in 2014 with 413 recorded births. This places Brentley in the top 5% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2014 with 413 births ranking #637. Since 1996, the popularity has increased by 4,030.0%. In 2014, approximately 1 in every 4,650 boys born was named Brentley. FALLING Recent data shows the name is currently falling.