Sylvester is a distinctive boys' name in United States, ranking #1999 in 2015 with 73 recorded births. The name reached its all-time peak in 1997 with 103 births ranking #1178. Since 1996, the popularity has decreased by 18.9%. In 2015, approximately 1 in every 26,250 boys born was named Sylvester. STABLE Recent data shows the name is currently stable.