Bain is a distinctive boys' name in United States, ranking #8371 in 2005 with 8 recorded births. This places Bain in the bottom 37% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2013 with 25 births ranking #3979. In 2005, approximately 1 in every 249,643 boys born was named Bain. FALLING Recent data shows the name is currently falling.