Isaack is a distinctive boys' name in United States, ranking #6755 in 2011 with 12 recorded births. This places Isaack in the top 47% 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 13 births ranking #5931. Since 1996, the popularity has increased by 140.0%. In 2011, approximately 1 in every 158,249 boys born was named Isaack. FALLING Recent data shows the name is currently falling.