Nicolai is a distinctive boys' name in United States, ranking #2239 in 2006 with 57 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 147.8%. In 2006, approximately 1 in every 36,055 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.