Nicolaus is a distinctive boys' name in United States, ranking #5568 in 2013 with 16 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 54.3%. In 2013, approximately 1 in every 118,203 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.