Justus is a distinctive boys' name in United States, ranking #1952 in 2025 with 79 recorded births. This places Justus in the top 14% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 300 births ranking #747. Since 1996, the popularity has decreased by 68.1%. In 2025, approximately 1 in every 21,621 boys born was named Justus. FALLING Recent data shows the name is currently falling.