Isaih is a distinctive boys' name in United States, ranking #1777 in 1998 with 57 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has increased by 26.7%. In 1998, approximately 1 in every 33,532 boys born was named Isaih. FALLING Recent data shows the name is currently falling.