Kail is a distinctive boys' name in United States, ranking #10757 in 1999 with 5 recorded births. The name reached its all-time peak in 2008 with 37 births ranking #3137. Since 1996, the popularity has decreased by 61.5%. In 1999, approximately 1 in every 384,017 boys born was named Kail. FALLING Recent data shows the name is currently falling.