Isiah is a distinctive boys' name in United States, ranking #776 in 2012 with 293 recorded births. This places Isiah in the top 5% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2001 with 822 births ranking #336. Since 1996, the popularity has decreased by 55.5%. In 2012, approximately 1 in every 6,473 boys born was named Isiah. STABLE Recent data shows the name is currently stable.