Cain is a distinctive boys' name in United States, ranking #783 in 2012 with 290 recorded births. The name reached its all-time peak in 2014 with 330 births ranking #726. Since 1996, the popularity has increased by 118.0%. In 2012, approximately 1 in every 6,540 boys born was named Cain. FALLING Recent data shows the name is currently falling.