Alexius is a distinctive boys' name in United States, ranking #6057 in 1999 with 10 recorded births. This places Alexius in the bottom 48% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1999 with 10 births ranking #6057. In 1999, approximately 1 in every 192,009 boys born was named Alexius. RISING Recent data shows the name is currently rising.