Isaih is a distinctive boys' name in United States, ranking #1730 in 2002 with 67 recorded births. The name reached its all-time peak in 1999 with 74 births ranking #1521. Since 1996, the popularity has increased by 48.9%. In 2002, approximately 1 in every 28,977 boys born was named Isaih. FALLING Recent data shows the name is currently falling.