Isiah is a distinctive boys' name in United States, ranking #1351 in 2021 with 137 recorded births. The name reached its all-time peak in 2001 with 822 births ranking #336. Since 1996, the popularity has decreased by 79.2%. In 2021, approximately 1 in every 12,761 boys born was named Isiah. STABLE Recent data shows the name is currently stable.