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County · California
Marin County
256,400Population
-2.3 %Change since 2020
-1,454Net migration
4.2 %Unemployment rate
Facts
- Population
- 256,400 (2024)
- Change since 2020
- -2.3 %
- Net migration
- -1,454 (2023)
- Unemployment rate
- 4.2 % (2025)
- State
- California
- Population base, April 2020
- 262,325 (2020)
- Births
- 2,144 (2023)
- Births per 1,000 residents, 2023
- 8.4
- Deaths
- 2,173 (2023)
- Deaths per 1,000 residents, 2023
- 8.5
- Natural change, 2023
- -29
- International migration
- 1,861 (2023)
- Domestic migration
- -3,315 (2023)
- Net migration per 1,000, 2023
- -5.7
- Postal code
- CA
- FIPS code
- 06041
Sources: US Census Bureau — Population Estimates, Bureau of Labor Statistics — LAUS
Unemployment rate, annual average
| Period | Value |
|---|---|
| 2025 | 4.2 % |
| 2024 | 3.9 % |
| 2023 | 3.5 % |
| 2022 | 2.9 % |
| 2021 | 4.9 % |
| 2020 | 7.2 % |
| 2019 | 2.5 % |
| 2018 | 2.6 % |
| 2017 | 3.1 % |
| 2016 | 3.5 % |
| 2015 | 3.6 % |
| 2014 | 4.3 % |
Population estimates, 2020–2024
| Period | Value |
|---|---|
| 2024 | 256,400 |
| 2023 | 255,706 |
| 2022 | 257,143 |
| 2021 | 259,254 |
| 2020 | 261,341 |