Isiah is a distinctive boys' name in United States, ranking #1020 in 2016 with 197 recorded births. This places Isiah in the top 7% 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 70.1%. In 2016, approximately 1 in every 9,631 boys born was named Isiah. STABLE Recent data shows the name is currently stable.