Cathy is a distinctive girls' name in United States, ranking #3166 in 2010 with 52 recorded births. The name reached its all-time peak in 1997 with 133 births ranking #1305. Since 1996, the popularity has decreased by 59.7%. In 2010, approximately 1 in every 34,179 girls born was named Cathy. FALLING Recent data shows the name is currently falling.