The baby name Demarkus appears in baby name data for the United States from 1987 to 2012. It was most popular in 1991 with 49 babies given the name.
In the later years of this period, Demarkus has become less common than it once was.
| Year | Count |
|---|---|
| 1987 | 6 |
| 1988 | 12 |
| 1989 | 29 |
| 1990 | 47 |
| 1991 | 49 |
| 1992 | 30 |
| 1993 | 40 |
| 1994 | 28 |
| 1995 | 39 |
| 1996 | 5 |
| 1997 | 12 |
| 1998 | 19 |
| 1999 | 5 |
| 2000 | 6 |
| 2001 | 20 |
| 2003 | 6 |
| 2008 | 18 |
| 2009 | 11 |
| 2011 | 10 |
| 2012 | 22 |