Surname Demecio (Demecio 
) , around the globe, is quite a rare family name. The last name Demecio is characteristic of Latin America and the Caribbean, particularly Mexico, where it is quite a rare surname, Nicaragua, and Venezuela, where it is a rare surname. Likewise, Demecio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demecio | Mexico, Peru, Guatemala, Argentina, Bolivia |