Susy is a distinctive girls' name in United States, ranking #10008 in 1998 with 9 recorded births. The name reached its all-time peak in 2007 with 18 births ranking #7365. Since 1996, the popularity has decreased by 18.2%. In 1998, approximately 1 in every 196,321 girls born was named Susy. FALLING Recent data shows the name is currently falling.