Demi-Leigh is a distinctive girls' name in England & Wales, ranking #712 in 2013 with 56 recorded births. The name reached its all-time peak in 2005 with 120 births ranking #336. Since 1996, the popularity has increased by 43.6%. In 2013, approximately 1 in every 5,508 girls born was named Demi-Leigh. FALLING Recent data shows the name is currently falling.