Cathy is a distinctive girls' name in United States, ranking #1305 in 1997 with 133 recorded births. This places Cathy in the top 8% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 1997 with 133 births ranking #1305. In 1997, approximately 1 in every 13,088 girls born was named Cathy. FALLING Recent data shows the name is currently falling.