Demi-Leigh is a moderately popular girls' name in England & Wales, ranking #395 in 2007 with 105 recorded births. The name reached its all-time peak in 2005 with 120 births ranking #336. Since 1996, the popularity has increased by 169.2%. In 2007, approximately 1 in every 2,915 girls born was named Demi-Leigh. FALLING Recent data shows the name is currently falling.