Sylvester is a distinctive boys' name in United States, ranking #1178 in 1997 with 103 recorded births. The name reached its all-time peak in 1997 with 103 births ranking #1178. Since 1996, the popularity has increased by 14.4%. In 1997, approximately 1 in every 18,302 boys born was named Sylvester. STABLE Recent data shows the name is currently stable.