Cathy is a distinctive girls' name in United States, ranking #1383 in 1998 with 124 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 1998, approximately 1 in every 14,249 girls born was named Cathy. FALLING Recent data shows the name is currently falling.