San Luis Obispo County's estimated 2026 population is 281,515 with a growth rate of -0.06% in the past year according to the most recent United States census data. San Luis Obispo County is the 24th largest county in California. The 2010 population was 269,800 and has seen a growth of 4.34% since that time.
Data after 2023 is projected based on recent change
The racial composition of San Luis Obispo County includes 72.38% White, 6.7% other race, 3.71% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (72.38%)
Two or more races (14.96%)
Other race (6.7%)
Asian (3.71%)
Black or African American (1.13%)
Native American (0.93%)
Native Hawaiian or Pacific Islander (0.18%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 203,738 | 72.38% |
| Two or more races | 42,124 | 14.96% |
| Other race | 18,863 | 6.7% |
| Asian | 10,455 | 3.71% |
| Black or African American | 3,189 | 1.13% |
| Native American | 2,618 | 0.93% |
| Native Hawaiian or Pacific Islander | 499 | 0.18% |
Married
Widowed
Divorced
Separated
Never Married
San Luis Obispo County's average per capita income is $53,414. Household income levels show a median of $93,398. The poverty rate stands at 12.85%.
Name | Median | Mean |
|---|---|---|
| Married Families | $130,074 | $168,835 |
| Families | $116,900 | $151,837 |
| Households | $93,398 | $126,122 |
| Non Families | $53,629 | $77,230 |
Average Income
Median Household Income
Poverty Rate