Nicolai is a distinctive boys' name in United States, ranking #2382 in 2003 with 45 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 95.7%. In 2003, approximately 1 in every 43,895 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.