Rook is a distinctive boys' name in United States, ranking #1972 in 2025 with 78 recorded births. This places Rook in the top 14% 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 2025, approximately 1 in every 21,898 boys born was named Rook. STABLE Recent data shows the name is currently stable.