San Luis Obispo County's estimated 2026 population is 282,581 with a growth rate of 0.08% 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 4.74% since that time.
Data after 2023 is projected based on recent change
Overall: 40.4 years
Female: 42.3 years
Male: 38.9 years
There are 232,311 adults, (62,338 of whom are seniors) in San Luis Obispo County.
Female: 139,589 (49.6%)
Male: 141,966 (50.4%)
The racial composition of San Luis Obispo County includes 69.35% White, 7.67% other race, 3.72% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 195,251 | 69.35% |
| Two or more races | 47,929 | 17.02% |
| Other race | 21,592 | 7.67% |
| Asian | 10,471 | 3.72% |
| Black or African American | 3,267 | 1.16% |
| Native American | 2,632 | 0.93% |
| Native Hawaiian or Pacific Islander | 413 | 0.15% |
San Luis Obispo County's average per capita income is $56,484. Household income levels show a median of $97,446. The poverty rate stands at 12.91%.
Name | Median | Mean |
|---|---|---|
| Married Families | $135,532 | $175,674 |
| Families | $120,533 | $157,446 |
| Households | $97,446 | $131,990 |
| Non Families | $57,671 | $82,508 |
Average Income
Median Household Income
Poverty Rate