Jocilyn is a distinctive girls' name in United States, ranking #5148 in 2009 with 28 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 250.0%. In 2009, approximately 1 in every 65,603 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.