Merilyn is a distinctive girls' name in United States, ranking #9487 in 2003 with 11 recorded births. The name reached its all-time peak in 2005 with 19 births ranking #6453. Since 1996, the popularity has increased by 120.0%. In 2003, approximately 1 in every 166,095 girls born was named Merilyn. FALLING Recent data shows the name is currently falling.