Nicolaus is a distinctive boys' name in United States, ranking #7396 in 2012 with 11 recorded births. The name reached its all-time peak in 1998 with 47 births ranking #2034. Since 1996, the popularity has decreased by 68.6%. In 2012, approximately 1 in every 172,420 boys born was named Nicolaus. STABLE Recent data shows the name is currently stable.