Callisto is a distinctive boys' name in United States, ranking #11007 in 2021 with 6 recorded births. This places Callisto in the bottom 22% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2022 with 8 births ranking #9112. In 2021, approximately 1 in every 291,373 boys born was named Callisto. FALLING Recent data shows the name is currently falling.