Surname Orosia (Orosia 
) , in the entire world, is a rare cognomen. The surname Orosia is habitual in Spain, where it is quite a rare surname, Philippines, where it is a very rare surname, and Venezuela. Measured by absolute frequency, the name is most common in Spain, Philippines, and Mexico. Likewise, Orosia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Orosia | Peru, Philippines, Argentina, Spain, Equatorial Guinea |