Merilyn is a distinctive girls' name in United States, ranking #6987 in 2004 with 17 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 240.0%. In 2004, approximately 1 in every 108,007 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.