Nicolai is a distinctive boys' name in United States, ranking #1883 in 2015 with 78 recorded births. The name reached its all-time peak in 2015 with 78 births ranking #1883. Since 1996, the popularity has increased by 239.1%. In 2015, approximately 1 in every 24,567 boys born was named Nicolai. STABLE Recent data shows the name is currently stable.