Johnjack is a distinctive boys' name in United States, ranking #12292 in 2005 with 5 recorded births. This places Johnjack in the bottom 8% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2005 with 5 births ranking #12292. In 2005, approximately 1 in every 399,429 boys born was named Johnjack. STABLE Recent data shows the name is currently stable.