Merilyn is a distinctive girls' name in United States, ranking #11934 in 2010 with 9 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 80.0%. In 2010, approximately 1 in every 197,481 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.