| Place Name | Seco Mines |
| Place Type | Census Designated Place |
| ZIP Code(s) | 78852 |
| County | Maverick County |
| Area Code(s) | 830 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 685 |
| Population Growth Rate (2010-19) | 2.14% |
| Majority Ethnicity | Hispanic 0% |
| Metro/Micro Stats Area | Eagle Pass, TX |
| US Congressional District(s) | Texas 23rd |
| State House Districts | 74 |
| State Senate Districts | 19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 43.73% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 56.27% |