Surname Delarosa-Tillero (Delarosa-Tillero 
) , in the entire world, is an extremely rare family name. The cognomen Delarosa-Tillero is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Delarosa, and a last name Tillero.
| VARIANT | COUNTRY |
|---|---|
| Delarosa-Tillero | United States |