Sylvanus is a distinctive boys' name in United States, ranking #9622 in 2023 with 8 recorded births. This places Sylvanus in the bottom 32% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2005 with 8 births ranking #8983. In 2023, approximately 1 in every 213,569 boys born was named Sylvanus. FALLING Recent data shows the name is currently falling.