Sergei is a distinctive boys' name in United States, ranking #7554 in 2005 with 10 recorded births. This places Sergei in the bottom 44% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1998 with 16 births ranking #4378. Since 1996, the popularity has decreased by 23.1%. In 2005, approximately 1 in every 199,715 boys born was named Sergei. STABLE Recent data shows the name is currently stable.