Merilyn is a distinctive girls' name in United States, ranking #7697 in 2002 with 14 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 180.0%. In 2002, approximately 1 in every 128,344 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.