Demi-Leigh is a distinctive girls' name in England & Wales, ranking #552 in 2011 with 75 recorded births. The name reached its all-time peak in 2005 with 120 births ranking #336. Since 1996, the popularity has increased by 92.3%. In 2011, approximately 1 in every 4,284 girls born was named Demi-Leigh. FALLING Recent data shows the name is currently falling.