Cathy is a distinctive girls' name in United States, ranking #1816 in 2003 with 103 recorded births. The name reached its all-time peak in 1997 with 133 births ranking #1305. Since 1996, the popularity has decreased by 20.2%. In 2003, approximately 1 in every 17,738 girls born was named Cathy. FALLING Recent data shows the name is currently falling.