Demographics & People — San Marcos, Texas
Population Overview
| Population (Census) | 68,920 |
| Estimated 2026 | ~75,700 |
| Median Age | 25.5 |
| Total Households | 27,606 |
| Family Households | 12,004 |
| Average Household Size | 2.25 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 43,643 |
| Black or African American | 3,890 |
| Asian | 1,474 |
| Hispanic or Latino | 28,890 |
Heritage & Ancestry
| Group | Count |
| Other groups | 30,635 |
| Hispanic: Hispanic or Latino | 28,124 |
| Hispanic: Mexican | 23,399 |
| Unclassified or not reported | 17,375 |
| German | 7,743 |
| Irish | 5,436 |
| English | 4,642 |
| Hispanic: Other Hispanic or Latino | 1,665 |
| Hispanic: Central American | 1,645 |
| Italian | 1,366 |
Language
| English Only | 48,684 |
| Spanish | 15,290 |
| Population 5+ | 66,164 |
Veterans
| Veterans | 2,463 |
| Population 18+ | 58,515 |
Commuting
| Mean Commute Time | 24.0 minutes |
| Work from Home | 11.1% |
| Commuter Profile | N/A |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for San Marcos, Texas.