Isak is a distinctive boys' name in United States, ranking #2594 in 2003 with 39 recorded births. The name reached its all-time peak in 2004 with 57 births ranking #2084. Since 1996, the popularity has increased by 56.0%. In 2003, approximately 1 in every 50,648 boys born was named Isak. RISING Recent data shows the name is currently rising.