Surname Zillas (Zillas 
) , in the world, is a very rare cognomen. The surname Zillas is habitual in Greece, where it is a very rare surname, the United States, where it is an extremely rare surname, and Mexico. Very seldom, Zillas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Zillas | Philippines, Mexico, United States, Greece, Brazil |