Izaiah is a distinctive boys' name in United States, ranking #773 in 1999 with 206 recorded births. The name reached its all-time peak in 2009 with 742 births ranking #400. Since 1996, the popularity has increased by 160.8%. In 1999, approximately 1 in every 9,321 boys born was named Izaiah. FALLING Recent data shows the name is currently falling.