Greysun is a distinctive boys' name in United States, ranking #12057 in 2005 with 5 recorded births. This places Greysun in the bottom 10% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2018 with 9 births ranking #8391. In 2005, approximately 1 in every 399,429 boys born was named Greysun. FALLING Recent data shows the name is currently falling.