Mystery is a distinctive girls' name in United States, ranking #8209 in 2005 with 14 recorded births. The name reached its all-time peak in 2003 with 16 births ranking #7107. Since 1996, the popularity has increased by 40.0%. In 2005, approximately 1 in every 131,978 girls born was named Mystery. STABLE Recent data shows the name is currently stable.