Demi-Leigh is a distinctive girls' name in England & Wales, ranking #557 in 2001 with 50 recorded births. The name reached its all-time peak in 2005 with 120 births ranking #336. Since 1996, the popularity has increased by 28.2%. In 2001, approximately 1 in every 5,360 girls born was named Demi-Leigh. FALLING Recent data shows the name is currently falling.