Karolyn is a distinctive girls' name in United States, ranking #5323 in 2010 with 26 recorded births. The name reached its all-time peak in 1997 with 52 births ranking #2493. Since 1996, the popularity has decreased by 29.7%. In 2010, approximately 1 in every 68,359 girls born was named Karolyn. RISING Recent data shows the name is currently rising.