Total Population in Marin County, CA
ACS 2024 5-Year Estimates
How Marin County Compares
National Distribution
Where Marin County falls among all 3,222 U.S. counties for total population.
■ Marin County: 257,969
Ranking Context
| Rank | County | Value |
|---|---|---|
| #276 | Kalamazoo County, MI | 262,375 |
| #277 | Williamson County, TN | 260,351 |
| #278 | Clay County, MO | 258,122 |
| #279 | Marin County, CA | 257,969 |
| #280 | Yakima County, WA | 257,152 |
| #281 | Washington County, AR | 256,765 |
| #282 | Sussex County, DE | 255,626 |
Total Population in Marin County, California
Marin County, California has a total population of 257,969, which ranks #279 of 3,222 out of 3,222 counties nationwide. This is 99.9% below the national value of 330M.
Within California, Marin County ranks #26 of 58 out of 58 counties. This places it in the 91th 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.