Karolyn is a distinctive girls' name in United States, ranking #4993 in 2017 with 27 recorded births. The name reached its all-time peak in 1997 with 52 births ranking #2493. Since 1996, the popularity has decreased by 27.0%. In 2017, approximately 1 in every 63,921 girls born was named Karolyn. RISING Recent data shows the name is currently rising.