Sergei is a distinctive boys' name in United States, ranking #10339 in 2001 with 6 recorded births. This places Sergei in the bottom 16% 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 53.8%. In 2001, approximately 1 in every 323,805 boys born was named Sergei. STABLE Recent data shows the name is currently stable.