Jocilyn is a distinctive girls' name in United States, ranking #8254 in 2000 with 12 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 50.0%. In 2000, approximately 1 in every 151,331 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.