Family name Dumerjean (Dumerjean 
) , in the world, is a very rare last name. The family name Dumerjean is characteristic of Canada, where it is a very rare surname, France, where it is an extremely rare surname, and Brazil. Not in comparison with a country's population, it most frequently occurs in the United States, Brazil, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Dumerjean | France, Brazil, Canada, United States |