San Andreas is a CDP located in Calaveras County, California. San Andreas has a 2025 population of 2,974 . It is also the county seat of Calaveras County . San Andreas is currently growing at a rate of 0.41% annually but its population has decreased by -20.25% since the most recent census, which recorded a population of 3,729 in 2020.
The average household income in San Andreas is $63,336 with a poverty rate of 35.01%. The median age in San Andreas is 56.1 years: 54.5 years for males, and 62 years for females. For every 100 females there are 116.0 males.
Data after 2023 is projected based on recent change
The racial composition of San Andreas includes 83.84% White, 5.55% other race, 3.68% Asian, and smaller percentages for Native American, Black or African American and multiracial populations.
White (83.84%)
Other race (5.55%)
Two or more races (3.71%)
Asian (3.68%)
Native American (2.36%)
Black or African American (0.87%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 2,418 | 83.84% |
| Other race | 160 | 5.55% |
| Two or more races | 107 | 3.71% |
| Asian | 106 | 3.68% |
| Native American | 68 | 2.36% |
| Black or African American | 25 | 0.87% |
Married
Widowed
Divorced
Separated
Never Married
San Andreas' average per capita income is $37,406. Household income levels show a median of $42,231. The poverty rate stands at 35.01%.
Name | Median | Mean |
|---|---|---|
| Married Families | $51,970 | - |
| Families | $50,956 | $72,628 |
| Households | $42,231 | $63,336 |
| Non Families | $20,703 | $32,869 |
Average Income
Median Household Income
Poverty Rate