Jocilyn is a distinctive girls' name in United States, ranking #5982 in 2007 with 23 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 187.5%. In 2007, approximately 1 in every 83,585 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.