Isak is a distinctive boys' name in United States, ranking #3317 in 2015 with 34 recorded births. This places Isak in the top 24% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2004 with 57 births ranking #2084. Since 1996, the popularity has increased by 36.0%. In 2015, approximately 1 in every 56,361 boys born was named Isak. RISING Recent data shows the name is currently rising.