Nicolaus is a distinctive boys' name in United States, ranking #2552 in 2001 with 38 recorded births. This places Nicolaus in the top 21% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 47 births ranking #2034. In 2001, approximately 1 in every 51,127 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.