Justus is a distinctive boys' name in United States, ranking #694 in 2000 with 255 recorded births. This places Justus in the top 6% of ranked US boys' names for the year. Its actual usage is classified as Uncommon. The name reached its all-time peak in 2007 with 300 births ranking #747. In 2000, approximately 1 in every 7,702 boys born was named Justus. FALLING Recent data shows the name is currently falling.