Cognomen Jarosa (Jarosa 
) , in the world, is a very rare last name. The surname Jarosa is characteristic of Latvia, where it is quite a rare surname, Spain, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Much less frequently, Jarosa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jarosa | Spain, Nigeria, United States, Latvia, India |