Throughout the world, Demarcke (Demarcke 
) is an extremely rare feminine forename. Much more prevalently, Demarcke is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Demarcke | Brazil, Canada, France, Belgium |
Ms, Ellen, Hanne, Fanny, Odile, Maryne, Cheryl, Carmen, Robert, Roland, Nando, Helene, Wannes, Martine, Michele, Stefaan, Annette, Lindsay, Jessica, Tiffany, Eljakim, Hector, Jerry, Jorne, James, Dan, Marc, Saar, Arno, Karo, Kurt, Kris, Dave, Dirk, Lisa, Jeff, Nina, Noel, Mieke, Shaun, Alain, Bieke, Diego, Geert, Leona, Janet, Murielle, and Benjamin