Castiel is a distinctive boys' name in United States, ranking #761 in 2018 with 309 recorded births. This places Castiel in the top 5% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2019 with 336 births ranking #724. In 2018, approximately 1 in every 5,875 boys born was named Castiel. STABLE Recent data shows the name is currently stable.