Sylvester is a distinctive boys' name in United States, ranking #2139 in 2018 with 66 recorded births. The name reached its all-time peak in 1997 with 103 births ranking #1178. Since 1996, the popularity has decreased by 26.7%. In 2018, approximately 1 in every 27,507 boys born was named Sylvester. STABLE Recent data shows the name is currently stable.