Brook is a distinctive boys' name in England & Wales, ranking #555 in 2004 with 46 recorded births. This places Brook in the top 12% of ranked UK boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2004 with 46 births ranking #555. Since 1996, the popularity has increased by 187.5%. In 2004, approximately 1 in every 6,706 boys born was named Brook. FALLING Recent data shows the name is currently falling.