Kastiel is a distinctive boys' name in United States, ranking #13255 in 2012 with 5 recorded births. This places Kastiel in the bottom 7% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 29 births ranking #3779. In 2012, approximately 1 in every 379,325 boys born was named Kastiel. STABLE Recent data shows the name is currently stable.