Sylvester is a distinctive boys' name in United States, ranking #1328 in 1999 with 91 recorded births. This places Sylvester in the top 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 103 births ranking #1178. In 1999, approximately 1 in every 21,100 boys born was named Sylvester. STABLE Recent data shows the name is currently stable.