Justus is a distinctive boys' name in United States, ranking #647 in 2002 with 297 recorded births. The name reached its all-time peak in 2007 with 300 births ranking #747. Since 1996, the popularity has increased by 19.8%. In 2002, approximately 1 in every 6,537 boys born was named Justus. FALLING Recent data shows the name is currently falling.