| Name | Sierra County |
| State | New Mexico |
| FIPS Code | 35051 |
| County Seat | Truth or Consequences |
| Timezone | Mountain Daylight Time (MDT) |
| Population (2024) | 11,535 |
| Population Growth Rate(2020-2024) | -0.36% |
| Majority Ethnicity | White 69.39% |
| Public School Majority Ethnicity | Hispanic 53% |
| Partisan Voting Index | Republican:+11 |
| Unemployment Rate (May 2026) | 7.9% |
| Sales Tax Rate (2025) | 6.69% |
| Area Code(s) | 575 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 69.39% |
| African American | 0.22% |
| Hispanic | 27.72% |
| Asian | 0.23% |
| Native American | 2.44% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 42.97% |
| African American | 1.01% |
| Hispanic | 52.99% |
| Asian | 0.93% |
| Native American | 0.47% |
| Hawaiin/Pacific Islander | 0.16% |