Rook is a distinctive boys' name in United States, ranking #3075 in 2015 with 38 recorded births. This places Rook in the top 22% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2025 with 78 births ranking #1972. In 2015, approximately 1 in every 50,428 boys born was named Rook. STABLE Recent data shows the name is currently stable.