Demi-Leigh is a distinctive girls' name in England & Wales, ranking #639 in 2012 with 65 recorded births. The name reached its all-time peak in 2005 with 120 births ranking #336. Since 1996, the popularity has increased by 66.7%. In 2012, approximately 1 in every 4,955 girls born was named Demi-Leigh. FALLING Recent data shows the name is currently falling.