Cain is a distinctive boys' name in United States, ranking #1142 in 2025 with 185 recorded births. This places Cain in the top 8% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2014 with 330 births ranking #726. Since 1996, the popularity has increased by 39.1%. In 2025, approximately 1 in every 9,233 boys born was named Cain. FALLING Recent data shows the name is currently falling.