Demi is a distinctive girls' name in England & Wales, ranking #634 in 2025 with 61 recorded births. The name reached its all-time peak in 1996 with 689 births ranking #79. Since 1996, the popularity has decreased by 91.1%. In 2025, approximately 1 in every 4,152 girls born was named Demi. STABLE Recent data shows the name is currently stable.
Demi is often used as a short form of Demetria, though it can also reflect modern Greek forms such as Dimi. It is brisk, stylish and well established as an independent name in modern use.
The name gained wider popularity in the United States during the late 1980s, helped by actress Demi Moore, and later received another lift through singer Demi Lovato. That visibility helped turn a shorter form into a familiar standalone choice.