Nicolai is a distinctive boys' name in United States, ranking #2526 in 2007 with 50 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 117.4%. In 2007, approximately 1 in every 41,505 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.