Karolyn is a distinctive girls' name in United States, ranking #5474 in 2012 with 25 recorded births. The name reached its all-time peak in 1997 with 52 births ranking #2493. Since 1996, the popularity has decreased by 32.4%. In 2012, approximately 1 in every 70,430 girls born was named Karolyn. RISING Recent data shows the name is currently rising.