Jastyn is a distinctive girls' name in United States, ranking #16415 in 2001 with 5 recorded births. This places Jastyn in the bottom 9% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2006 with 6 births ranking #15954. In 2001, approximately 1 in every 360,112 girls born was named Jastyn. STABLE Recent data shows the name is currently stable.