Sierra County's estimated 2026 population is 11,377 with a growth rate of -0.16% 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 -5.53% since that time.
Data after 2023 is projected based on recent change
Overall: 57.6 years
Female: 57.4 years
Male: 59.4 years
There are 9,705 adults, (4,465 of whom are seniors) in Sierra County.
Female: 5,813 (50.5%)
Male: 5,687 (49.5%)
The racial composition of Sierra County includes 69.31% White, 7.35% other race, and smaller percentages for Native American, Black or African American, Asian and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,971 | 69.31% |
| Two or more races | 2,554 | 22.21% |
| Other race | 845 | 7.35% |
| Native American | 87 | 0.76% |
| Black or African American | 25 | 0.22% |
| Asian | 18 | 0.16% |
Sierra County's average per capita income is $27,750. Household income levels show a median of $41,600. The poverty rate stands at 21.38%.
Name | Median | Mean |
|---|---|---|
| Married Families | $75,801 | - |
| Families | $67,656 | $73,635 |
| Households | $41,600 | $54,369 |
| Non Families | $27,261 | $34,928 |
Average Income
Median Household Income
Poverty Rate