Merilyn is a distinctive girls' name in United States, ranking #8559 in 2001 with 12 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 140.0%. In 2001, approximately 1 in every 150,047 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.