Isayah is a distinctive boys' name in United States, ranking #2677 in 2006 with 44 recorded births. The name reached its all-time peak in 2007 with 46 births ranking #2663. Since 1996, the popularity has increased by 340.0%. In 2006, approximately 1 in every 46,707 boys born was named Isayah. FALLING Recent data shows the name is currently falling.