Nicolaus is a distinctive boys' name in United States, ranking #2995 in 2002 with 31 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 11.4%. In 2002, approximately 1 in every 62,628 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.