Issac is a distinctive boys' name in United States, ranking #521 in 1996 with 384 recorded births. This places Issac 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 2008 with 820 births ranking #376. In 1996, approximately 1 in every 4,933 boys born was named Issac. FALLING Recent data shows the name is currently falling.