Susy is a distinctive girls' name in United States, ranking #10352 in 2012 with 11 recorded births. This places Susy in the bottom 47% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2007 with 18 births ranking #7365. In 2012, approximately 1 in every 160,067 girls born was named Susy. FALLING Recent data shows the name is currently falling.