Jocilyn is a distinctive girls' name in United States, ranking #10435 in 2016 with 10 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 25.0%. In 2016, approximately 1 in every 177,149 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.