Kaustav is a distinctive boys' name in United States, ranking #11735 in 2009 with 6 recorded births. This places Kaustav in the bottom 19% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2009 with 6 births ranking #11735. In 2009, approximately 1 in every 330,551 boys born was named Kaustav. STABLE Recent data shows the name is currently stable.