Isaih is a distinctive boys' name in United States, ranking #1490 in 1997 with 71 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has increased by 57.8%. In 1997, approximately 1 in every 26,551 boys born was named Isaih. FALLING Recent data shows the name is currently falling.