Isahia is a distinctive boys' name in United States, ranking #8814 in 2002 with 7 recorded births. The name reached its all-time peak in 2007 with 12 births ranking #6806. Since 1996, the popularity has increased by 16.7%. In 2002, approximately 1 in every 277,353 boys born was named Isahia. FALLING Recent data shows the name is currently falling.