Nicolai is a distinctive boys' name in United States, ranking #2420 in 2005 with 48 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 108.7%. In 2005, approximately 1 in every 41,607 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.