Onisty is a distinctive girls' name in United States, ranking #18861 in 2011 with 5 recorded births. This places Onisty in the bottom 4% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2008 with 8 births ranking #13494. In 2011, approximately 1 in every 351,761 girls born was named Onisty. STABLE Recent data shows the name is currently stable.