Kathleen is a moderately popular girls' name in United States, ranking #204 in 2000 with 1,585 recorded births. The name reached its all-time peak in 1996 with 2,107 births ranking #152. Since 1996, the popularity has decreased by 24.8%. In 2000, approximately 1 in every 1,146 girls born was named Kathleen. FALLING Recent data shows the name is currently falling.