Nicolaus is a distinctive boys' name in United States, ranking #2034 in 1998 with 47 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has increased by 34.3%. In 1998, approximately 1 in every 40,666 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.