| Place Name | San Diego |
| Place Type | City |
| ZIP Code(s) | 78384 |
| County | Duval County |
| Area Code(s) | 361 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 4,694 |
| Population Growth Rate (2010-19) | -16.49% |
| Majority Ethnicity | Hispanic 0.45% |
| Metro/Micro Stats Area | Alice, TX |
| US Congressional District(s) | Texas 15th |
| State House Districts | 31 |
| State Senate Districts | 21 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 48.08% |
| African American | 0% |
| Hispanic | 0.45% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 51.47% |