Nicolai is a distinctive boys' name in United States, ranking #2835 in 1998 with 29 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 26.1%. In 1998, approximately 1 in every 65,908 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.