Isaul is a distinctive boys' name in United States, ranking #6849 in 1997 with 8 recorded births. This places Isaul 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 1997 with 8 births ranking #6849. Since 1996, the popularity has increased by 14.3%. In 1997, approximately 1 in every 235,636 boys born was named Isaul. FALLING Recent data shows the name is currently falling.