| 5,662 | (24%) | |
| 4,612 | (20%) | |
| 4,095 | (18%) | |
| 2,157 | (9%) | |
| 1,306 | (6%) | |
| 1,225 | (5%) | |
| 1,033 | (5%) | |
| 901 | (4%) | |
| 799 | (4%) | |
| 430 | (2%) | |
| 394 | (2%) | |
| 47 | (0%) |
Source: U.S. Census Bureau - A.C.S 2007
| 44,851 | (100%) | |
| 29,617 | (66%) | |
| 11,939 | (27%) | |
| 2,555 | (6%) | |
| 849 | (2%) | |
| 428 | (1%) |
San Marcos Texas's population is estimated to be approximately 44,851. There are 29,617 White residents which make up 66.00 % of the states' population. The remaining population is made up of 11,939 Others, 2,555 Blacks, 849 Asians, and 428 Native Americans.
