Los Alamos County's estimated 2026 population is 20,185 with a growth rate of 1.28% in the past year according to the most recent United States census data. Los Alamos County is the 19th largest county in New Mexico. The 2010 population was 17,995 and has seen a growth of 12.17% since that time.
Data after 2023 is projected based on recent change
The racial composition of Los Alamos County includes 76.3% White, 5.54% other race, 4.98% Asian, and smaller percentages for Black or African American, Native American and multiracial populations.
White (76.3%)
Two or more races (11.11%)
Other race (5.54%)
Asian (4.98%)
Black or African American (1.2%)
Native American (0.87%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 14,782 | 76.3% |
| Two or more races | 2,152 | 11.11% |
| Other race | 1,074 | 5.54% |
| Asian | 964 | 4.98% |
| Black or African American | 233 | 1.2% |
| Native American | 169 | 0.87% |
Married
Widowed
Divorced
Separated
Never Married
Los Alamos County's average per capita income is $96,611. Household income levels show a median of $143,188. The poverty rate stands at 2.93%.
Name | Median | Mean |
|---|---|---|
| Married Families | $175,582 | - |
| Families | $165,685 | $195,891 |
| Households | $143,188 | $167,396 |
| Non Families | $100,808 | $113,976 |
Average Income
Median Household Income
Poverty Rate