Brook is a distinctive boys' name in United States, ranking #6098 in 2017 with 14 recorded births. The name reached its all-time peak in 1997 with 47 births ranking #1933. Since 1996, the popularity has decreased by 65.9%. In 2017, approximately 1 in every 132,166 boys born was named Brook. FALLING Recent data shows the name is currently falling.