Jocilyn is a distinctive girls' name in United States, ranking #6976 in 2005 with 17 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 112.5%. In 2005, approximately 1 in every 108,688 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.