Izaack is a distinctive boys' name in United States, ranking #13110 in 2007 with 5 recorded births. This places Izaack in the bottom 9% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2011 with 10 births ranking #7706. In 2007, approximately 1 in every 415,047 boys born was named Izaack. RISING Recent data shows the name is currently rising.