Isiah is a distinctive boys' name in United States, ranking #1094 in 2015 with 178 recorded births. The name reached its all-time peak in 2001 with 822 births ranking #336. Since 1996, the popularity has decreased by 72.9%. In 2015, approximately 1 in every 10,765 boys born was named Isiah. STABLE Recent data shows the name is currently stable.