Nicolai is a distinctive boys' name in United States, ranking #2662 in 1997 with 30 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 30.4%. In 1997, approximately 1 in every 62,836 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.