| Population | San Marcos | U.S. |
|---|
| Total Population | 34,733 | 281,421,920 |
| Female | 50.8% | 50.9% |
| Male | 49.2% | 49.1% |
| 18 years and over | 84.6% | 74.3% |
| 65 years and over | 7.2% | 12.4% |
| Married Persons | 30.9% | 56.5% |
| Single Persons | 69.1% | 43.5% |
| Median Age | 23.3 | 35.3 |
| Average Family Size | 3.1 | 3.1 |
| Ethnicity |
| White | 74.7% | 77.0% |
| Black or African American | 5.7% | 12.6% |
| American Indian and Alaska Native | 0.7% | 0.9% |
| Asian | 1.3% | 3.7% |
| Native Hawaiian and Other Pacific Islander | 0.1% | 0.1% |
| Other | 17.5% | 5.6% |
| Hispanic or Latino (of any race) | 37.6% | 12.9% |
| Housing Characteristics | San Marcos | U.S. |
|---|
| Total Housing Units | 13,287 | 115,904,640 |
| Median Home Cost | $83,400 | $119,600 |
| Number of Households | 12,660 | 105,480,104 |
| Persons per Household | 2.31 | 2.59 |
| Economic Characteristics | San Marcos | U.S. |
|---|
| Median Household Income | $25,809 | $41,994 |
| Per Capita Income | $13,468 | $21,587 |
| In Labor Force | 68.9% | 63.9% |
| Families below poverty level | 760 | 6,620,945 |
| Education Characteristics | San Marcos | U.S. |
|---|
| School Enrollment |
| Elementary School Enrollment | 1,934 | 33,653,640 |
| High School Enrollment | 1,026 | 16,380,951 |
| College or Graduate School | 13,367 | 17,483,262 |
| Educational Attainment Population 25 years and older |
| High School Graduate | 23.9% | 28.6% |
| Associates Degree | 3.6% | 6.3% |
| Bachelor's Degree | 17.9% | 15.5% |
| Graduate or Professional Degree | 11.0% | 8.9% |
Data provided by the 2000 U.S. Census
