Marin County
Large fringe metro
FIPS 06041
Profiled Cities (1)
People
253.7K
Population
Census 2025 Est.487.7/sq mi
Density
Census 2025 Est.-2.9%
Growth 2020–25
Census 2020–2025$149K
Median HH Income
ACS 2024 5-yr47.4
Median Age
ACS 2024 5-yr92.8%
Bachelor's+
ACS 2024 5-yr8.3%
Poverty Rate
SAIPE 20243.8%
Uninsured
ACS 2024 5-yr64.7%
Owner-Occupied
ACS 2024 5-yr10.0%
Disability
ACS 2024 5-yr19.5%
Hispanic
ACS 2024 5-yr65.1%
Non-Hisp. White
ACS 2024 5-yr2.1%
Non-Hisp. Black
ACS 2024 5-yrMigration
IRS Statistics of Income county migration. Measures tax filer movement, not Census population counts.
9.5K
Inflow (people)
IRS SOI 2022–2310.8K
Outflow (people)
IRS SOI 2022–23-1,336
Net Migration
IRS SOI 2022–23Economy
3.9%
Unemployment
BLS LAUS 2025125.4K
Labor Force
BLS LAUS 2025$191K
Per Capita Income
BEA 2024$36.9B
County GDP
BEA 202410K
Business Establishments
CBP 2023106.2K
Employees
CBP 2023$9.2B
Annual Payroll
CBP 2023Housing
$1.5M
Median Home Value
ACS 2024 5-yr$3K
Median Gross Rent
ACS 2024 5-yr21K
Owner HH w/ Housing Problems
ACS 2024 5-yr19.4K
Renter HH w/ Housing Problems
ACS 2024 5-yrYes
Housing Stress (USDA)
ACS 2024 5-yrHealth
37th pctile
Social Vulnerability
CDC SVI 202221.3%
Adult Obesity
CDC PLACES 20257.5%
Diabetes
CDC PLACES 202515.8%
Poor Mental Health
CDC PLACES 20258.4%
Current Smoking
CDC PLACES 2025143.1/100K
Primary Care Physicians
HRSA AHRF 2024–251.7/1K
Hospital Beds
HRSA AHRF 2024–25504.1/1K bene
Medicare ER Visits
CMS 2023Environment & Risk
96.4
FEMA Risk Score
FEMA NRI Dec 2025Relatively High
Risk Rating
FEMA NRI Dec 2025Very High
Resilience Rating
FEMA NRI Dec 2025$259.3M
Expected Annual Loss
FEMA NRI Dec 20259.40
PM2.5 (EPA EJScreen)
EPA EJScreen 20240.08
Diesel PM
EPA EJScreen 20240.9%
EJ Demographic Index
EPA EJScreen 2024Broadband & Food Access
1.0%
Fixed Broadband 100/20 Mbps
FCC 20241.0%
Mobile 5G Coverage
FCC 202411.9%
Low Food Access (pop)
USDA FEA 20190.4%
No-Car Low Food Access (HH)
USDA FEA 2019Land & Climate
520.1 sq mi
Land Area
TIGER 202456.3°F
Avg Temp (1991–2020)
NOAA 1991–202064.9°F
Avg Max Temp
NOAA 1991–202047.7°F
Avg Min Temp
NOAA 1991–202035.8"
Annual Precip
NOAA 1991–2020County Character
Metro - Counties in metro areas of 1 million population or more
Rural-Urban Class (RUCC)
TIGER 2024Large fringe metro
NCHS Urban-Rural Class
TIGER 2024Not industry-dependent
Industry Dependence (USDA)
TIGER 2024Recreation
Typology Flags
TIGER 2024