Merilyn is a distinctive girls' name in United States, ranking #7988 in 2008 with 16 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 220.0%. In 2008, approximately 1 in every 118,170 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.