Isaih is a distinctive boys' name in United States, ranking #7345 in 2019 with 11 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has decreased by 75.6%. In 2019, approximately 1 in every 163,033 boys born was named Isaih. FALLING Recent data shows the name is currently falling.