Total Population in San Luis Obispo County, CA
ACS 2024 5-Year Estimates
How San Luis Obispo County Compares
National Distribution
Where San Luis Obispo County falls among all 3,222 U.S. counties for total population.
■ San Luis Obispo County: 281,555
Ranking Context
| Rank | County | Value |
|---|---|---|
| #253 | Alachua County, FL | 285,492 |
| #254 | Ingham County, MI | 283,913 |
| #255 | Winnebago County, IL | 283,292 |
| #256 | San Luis Obispo County, CA | 281,555 |
| #257 | Cherokee County, GA | 281,032 |
| #258 | Southeastern Connecticut Planning Region, CT | 279,971 |
| #259 | Kitsap County, WA | 277,881 |
Total Population in San Luis Obispo County, California
San Luis Obispo County, California has a total population of 281,555, which ranks #256 of 3,222 out of 3,222 counties nationwide. This is 99.9% below the national value of 330M.
Within California, San Luis Obispo County ranks #24 of 58 out of 58 counties. This places it in the 92th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.