Justus is a distinctive boys' name in United States, ranking #717 in 1998 with 231 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 1998, approximately 1 in every 8,274 boys born was named Justus. FALLING Recent data shows the name is currently falling.