| 5,807 | (17%) | |
| 5,115 | (15%) | |
| 4,134 | (12%) | |
| 3,845 | (11%) | |
| 3,373 | (10%) | |
| 3,337 | (10%) | |
| 2,324 | (7%) | |
| 1,464 | (4%) | |
| 1,161 | (3%) | |
| 1,018 | (3%) | |
| 959 | (3%) | |
| 578 | (2%) |
Source: U.S. Census Bureau - A.C.S 2007
| 72,609 | (100%) | |
| 53,682 | (74%) | |
| 10,902 | (15%) | |
| 6,003 | (8%) | |
| 2,394 | (3%) | |
| 1,077 | (2%) | |
| 952 | (1%) |
San Marcos California's population is estimated to be approximately 72,609. There are 53,682 White residents which make up 73.90 % of the states' population. The remaining population is made up of 10,902 Others, 6,003 Asians, 2,394 Blacks, 1,077 Hawaiian & Pacific Islanders, and 952 Native Americans.
