Jocilyn is a distinctive girls' name in United States, ranking #7593 in 2011 with 16 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has increased by 100.0%. In 2011, approximately 1 in every 109,925 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.