Isahia is a distinctive boys' name in United States, ranking #5813 in 1997 with 10 recorded births. The name reached its all-time peak in 2007 with 12 births ranking #6806. Since 1996, the popularity has increased by 66.7%. In 1997, approximately 1 in every 188,509 boys born was named Isahia. FALLING Recent data shows the name is currently falling.