Globally, Orosco-Birch (Orosco-Birch 
) is an extremely rare unknown gender first name. Much more frequently, Orosco-Birch is the last name as well as the forename. Parts of the name also exists independently as a last name Orosco, and a last name Birch.
| VARIANT | COUNTRY |
|---|---|
| Orosco-Birch | United States |