Isac is a distinctive boys' name in United States, ranking #1560 in 2010 with 102 recorded births. The name reached its all-time peak in 2006 with 148 births ranking #1147. Since 1996, the popularity has increased by 64.5%. In 2010, approximately 1 in every 18,808 boys born was named Isac. RISING Recent data shows the name is currently rising.