Izaiah is a distinctive boys' name in England & Wales, ranking #1197 in 2025 with 24 recorded births. This places Izaiah in the top 20% of ranked UK boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 49 births ranking #704. In 2025, approximately 1 in every 11,331 boys born was named Izaiah. FALLING Recent data shows the name is currently falling.