Sierra County's estimated 2026 population is 11,097 with a growth rate of -1.3% in the past year according to the most recent United States census data. Sierra County is the 25th largest county in New Mexico. The 2010 population was 12,043 and has seen a growth of -7.86% since that time.
Data after 2023 is projected based on recent change
The racial composition of Sierra County includes 73.64% White, 7.3% other race, and smaller percentages for Native American, Asian, Black or African American and multiracial populations.
White (73.64%)
Two or more races (15.99%)
Other race (7.3%)
Native American (2.59%)
Asian (0.24%)
Black or African American (0.23%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 8,477 | 73.64% |
| Two or more races | 1,841 | 15.99% |
| Other race | 840 | 7.3% |
| Native American | 298 | 2.59% |
| Asian | 28 | 0.24% |
| Black or African American | 27 | 0.23% |
Married
Widowed
Divorced
Separated
Never Married
Sierra County's average per capita income is $25,239. Household income levels show a median of $37,840. The poverty rate stands at 24.93%.
Name | Median | Mean |
|---|---|---|
| Married Families | $65,485 | - |
| Families | $57,362 | $67,540 |
| Households | $37,840 | $50,519 |
| Non Families | $24,150 | $31,126 |
Average Income
Median Household Income
Poverty Rate