Kathryn is a moderately popular girls' name in United States, ranking #125 in 2005 with 2,579 recorded births. The name reached its all-time peak in 1996 with 4,102 births ranking #87. Since 1996, the popularity has decreased by 37.1%. In 2005, approximately 1 in every 716 girls born was named Kathryn. FALLING Recent data shows the name is currently falling.