Cathy is a distinctive girls' name in United States, ranking #1482 in 1999 with 116 recorded births. The name reached its all-time peak in 1997 with 133 births ranking #1305. Since 1996, the popularity has decreased by 10.1%. In 1999, approximately 1 in every 15,291 girls born was named Cathy. FALLING Recent data shows the name is currently falling.