Merilyn is a distinctive girls' name in United States, ranking #10982 in 2012 with 10 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 100.0%. In 2012, approximately 1 in every 176,074 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.