Castiel is a distinctive boys' name in United States, ranking #1369 in 2012 with 123 recorded births. This places Castiel in the top 10% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2019 with 336 births ranking #724. In 2012, approximately 1 in every 15,420 boys born was named Castiel. STABLE Recent data shows the name is currently stable.