Nicolaus is a distinctive boys' name in United States, ranking #11574 in 2020 with 6 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 82.9%. In 2020, approximately 1 in every 287,511 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.