Nicolai is a distinctive boys' name in United States, ranking #3298 in 2001 with 27 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 17.4%. In 2001, approximately 1 in every 71,957 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.