Demi-Lee is a distinctive girls' name in England & Wales, ranking #708 in 2005 with 43 recorded births. The name reached its all-time peak in 2005 with 43 births ranking #708. Since 1996, the popularity has increased by 104.8%. In 2005, approximately 1 in every 6,704 girls born was named Demi-Lee. FALLING Recent data shows the name is currently falling.