Kathleen is a moderately popular girls' name in United States, ranking #422 in 2007 with 779 recorded births. The name reached its all-time peak in 1996 with 2,107 births ranking #152. Since 1996, the popularity has decreased by 63.0%. In 2007, approximately 1 in every 2,468 girls born was named Kathleen. FALLING Recent data shows the name is currently falling.