Nicolaus is a distinctive boys' name in United States, ranking #3341 in 2003 with 28 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 20.0%. In 2003, approximately 1 in every 70,545 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.