Kail is a distinctive boys' name in United States, ranking #3418 in 2006 with 31 recorded births. The name reached its all-time peak in 2008 with 37 births ranking #3137. Since 1996, the popularity has increased by 138.5%. In 2006, approximately 1 in every 66,294 boys born was named Kail. FALLING Recent data shows the name is currently falling.