Susy is a distinctive girls' name in United States, ranking #7365 in 2007 with 18 recorded births. The name reached its all-time peak in 2007 with 18 births ranking #7365. Since 1996, the popularity has increased by 63.6%. In 2007, approximately 1 in every 106,803 girls born was named Susy. FALLING Recent data shows the name is currently falling.