Nicholaus is a distinctive boys' name in United States, ranking #9407 in 2018 with 8 recorded births. The name reached its all-time peak in 1999 with 88 births ranking #1364. Since 1996, the popularity has decreased by 90.2%. In 2018, approximately 1 in every 226,934 boys born was named Nicholaus. FALLING Recent data shows the name is currently falling.