Isiah is a distinctive boys' name in United States, ranking #1127 in 2017 with 170 recorded births. This places Isiah in the top 8% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2001 with 822 births ranking #336. Since 1996, the popularity has decreased by 74.2%. In 2017, approximately 1 in every 10,884 boys born was named Isiah. STABLE Recent data shows the name is currently stable.