Nicolaus is a distinctive boys' name in United States, ranking #5365 in 2011 with 17 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 51.4%. In 2011, approximately 1 in every 111,705 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.