Grason is a distinctive boys' name in United States, ranking #5848 in 2002 with 12 recorded births. This places Grason in the top 47% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 27 births ranking #3713. In 2002, approximately 1 in every 161,789 boys born was named Grason. FALLING Recent data shows the name is currently falling.