Susy is a distinctive girls' name in United States, ranking #13685 in 2003 with 7 recorded births. The name reached its all-time peak in 2007 with 18 births ranking #7365. Since 1996, the popularity has decreased by 36.4%. In 2003, approximately 1 in every 261,007 girls born was named Susy. FALLING Recent data shows the name is currently falling.