Last name Boulage (Boulage 
) , globally, is a very rare cognomen. The last name Boulage is characteristic of France, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Boulage | United States, France |
| thomas-pascal boulage French lawyer, FR (b. 1769) |
|
|
| jean-baptiste ernest boulage French official (1807-1863), FR (b. 1807) |
|