Isaih is a distinctive boys' name in United States, ranking #1893 in 2004 with 65 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has increased by 44.4%. In 2004, approximately 1 in every 30,535 boys born was named Isaih. FALLING Recent data shows the name is currently falling.