Isaih is a distinctive boys' name in United States, ranking #1770 in 2001 with 64 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has increased by 42.2%. In 2001, approximately 1 in every 30,357 boys born was named Isaih. FALLING Recent data shows the name is currently falling.