Caswell is a distinctive boys' name in United States, ranking #9866 in 2017 with 7 recorded births. This places Caswell in the bottom 31% 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 9 births ranking #8286. In 2017, approximately 1 in every 264,331 boys born was named Caswell. RISING Recent data shows the name is currently rising.