Family name Demarr (Demarr 
) , across the world, is a rare last name. The surname Demarr is habitual in the United States, where it is a rare surname, and New Zealand, where it is a very rare surname. Very seldom, Demarr is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demarr | New Zealand, India, United States, Philippines |
| ralph algernon demarr Ph.D. University of Illinois at Urbana-Champaign 1961 (b. 1930) |
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| fred demarr University of Maryland Alumnus, Assistant Dean, and president of the Prince George's County Historical Society |
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