Isaih is a distinctive boys' name in United States, ranking #5904 in 2017 with 15 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has decreased by 66.7%. In 2017, approximately 1 in every 123,354 boys born was named Isaih. FALLING Recent data shows the name is currently falling.