| Name | Marin County |
| State | California |
| FIPS Code | 06041 |
| County Seat | San Rafael |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2024) | 255,706 |
| Population Growth Rate(2020-2024) | -2.59% |
| Majority Ethnicity | White 71.35% |
| Public School Majority Ethnicity | White 51% |
| Partisan Voting Index | Strongly Democratic:+32 |
| Unemployment Rate (May 2026) | 4.1% |
| Sales Tax Rate (2025) | 8.25% |
| Area Code(s) | 415 / 628 / 707 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 71.35% |
| African American | 2.38% |
| Hispanic | 19.23% |
| Asian | 6.28% |
| Native American | 0.6% |
| Hawaiin/Pacific Islander | 0.16% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 50.63% |
| African American | 1.56% |
| Hispanic | 34.69% |
| Asian | 4.77% |
| Native American | 0.31% |
| Hawaiin/Pacific Islander | 0.15% |