Nicolai is a distinctive boys' name in United States, ranking #2405 in 2004 with 47 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 104.3%. In 2004, approximately 1 in every 42,230 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.