Susy is a distinctive girls' name in United States, ranking #7280 in 2001 with 15 recorded births. The name reached its all-time peak in 2007 with 18 births ranking #7365. Since 1996, the popularity has increased by 36.4%. In 2001, approximately 1 in every 120,037 girls born was named Susy. FALLING Recent data shows the name is currently falling.