Nicholaus is a distinctive boys' name in United States, ranking #11714 in 2014 with 6 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1364. Since 1996, the popularity has decreased by 92.7%. In 2014, approximately 1 in every 320,073 boys born was named Nicholaus. FALLING Recent data shows the name is currently falling.