Cathy is a distinctive girls' name in United States, ranking #2748 in 2015 with 64 recorded births. The name reached its all-time peak in 1997 with 133 births ranking #1305. Since 1996, the popularity has decreased by 50.4%. In 2015, approximately 1 in every 27,885 girls born was named Cathy. FALLING Recent data shows the name is currently falling.