Jocilyn is a distinctive girls' name in United States, ranking #17818 in 2013 with 5 recorded births. The name reached its all-time peak in 2009 with 28 births ranking #5148. Since 1996, the popularity has decreased by 37.5%. In 2013, approximately 1 in every 350,883 girls born was named Jocilyn. STABLE Recent data shows the name is currently stable.