Cain is a moderately popular boys' name in England & Wales, ranking #291 in 2003 with 100 recorded births. The name reached its all-time peak in 2001 with 191 births ranking #184. Since 1996, the popularity has increased by 20.5%. In 2003, approximately 1 in every 2,995 boys born was named Cain. STABLE Recent data shows the name is currently stable.