Mercy is a distinctive girls' name in England & Wales, ranking #806 in 2009 with 43 recorded births. The name reached its all-time peak in 2010 with 44 births ranking #821. Since 1996, the popularity has increased by 290.9%. In 2009, approximately 1 in every 7,288 girls born was named Mercy. STABLE Recent data shows the name is currently stable.