Isah is a distinctive boys' name in United States, ranking #7900 in 1998 with 7 recorded births. This places Isah in the bottom 30% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 7 births ranking #7900. In 1998, approximately 1 in every 273,045 boys born was named Isah. FALLING Recent data shows the name is currently falling.