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COUNTY

Marin County

California · 253,694 residents (2025 est.) · 520 sq mi
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Part of the San Francisco metro area
The short version

With 257,969 people, Marin County is a county in California. Home values have roughly tripled since 2000, reaching $1,507,300. 61% of adults hold a bachelor's degree, against 36% nationally. At a median age of 47.4, this is an older place than the country as a whole. Households here earn about 50% more than in California as a whole. Median household income runs $149,091, well clear of the $82,259 US median.

At a glance
Wealthier
median household income $149,091, above the US median
US median: $82,259
Older
median age 47.4
US median: 38.9
More educated
61% hold a bachelor's degree
US average: 36%
Less affordable
home values up 68%, inflation adjusted
US median home: $376,019
Unique to this place

What stands out about Marin County

What changed most since 1990

  • Median age38.2 → 47.4 (+9.2 years)US over the same years: +6.0 years

Among the 58 counties in California

  • 3rd in household income$149,091
  • 1st in share with a bachelor's degree61.1%
  • 2nd in home value$1,507,300
  • 37th in diversity score66.2
Section 01

Population & growth

Total population
257,969
+4%since 2000
from 247,289 in 2000
253,694 in 2025 (Census Bureau estimate)
1990 – 2025
Population density
496 / sq mi
+4%since 2000
from 475 / sq mi in 2000
US average: 281
Median age
47.4
+15%since 2000
from 41.3 in 2000
US average: 38.9
Land area
520 sq mi
Population, 1990 – 2024
227K237K246K256K266K19902000201020202024Marin County
2024258K
1990201020202024
Age distribution, 2024
Under 54.4%(11,325)
US avg: 5.6%
5 to 95.2%(13,517)
US avg: 6%
10 to 145.7%(14,773)
US avg: 6.4%
15 to 196.2%(16,109)
US avg: 6.6%
20 to 244.8%(12,492)
US avg: 6.5%
25 to 348.5%(21,888)
US avg: 13.7%
35 to 4411.8%(30,378)
US avg: 13.2%
45 to 5414.5%(37,502)
US avg: 12.2%
55 to 6415%(38,640)
US avg: 12.7%
65 to 7413.1%(33,768)
US avg: 10.2%
75 to 847.8%(20,234)
US avg: 5.1%
85 and over2.8%(7,343)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$149,091
+15%inflation adjusted, since 2000
from $71,306 in 2000
US average: $82,259
1990 – 2024
Per capita income
$93,920
+109%since 2000
from $44,962 in 2000
US average: $44,673
Households earning $100K+
72.6%
+15.7 ptssince 2009
from 56.9% in 2009
US average: 53.3%
Poverty rate
8.3%
+1.7 ptssince 2000
from 6.6% in 2000
US average: 12.5%
Income inequality (Gini)
0.522
+5%since 2010
from 0.498 in 2010
US average: 0.476
Workforce by industry, 2024
Information9.4%
US avg: 10.8%
Other services9%
US avg: 6.7%
Wholesale trade6.4%
US avg: 6.9%
Public administration5.7%
US avg: 4.8%
Retail trade4.6%
US avg: 9.9%
Arts, entertainment, food4.1%
US avg: 1.9%
Finance & insurance3.2%
US avg: 5.9%
Professional, scientific, technical2.7%
US avg: 5.1%
Transportation & warehousing1.8%
US avg: 2.2%
Agriculture, forestry, fishing0.9%
US avg: 1.6%
Construction0.9%
US avg: 1.2%
Education & health services0.5%
US avg: 0.9%
Manufacturing0%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$1,507,300
+68%inflation adjusted, since 2000
from $493,300 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$2,668
+26%inflation adjusted, since 2000
from $1,162 in 2000
US average: $1,442
Owner-occupied
64.7%
+1.1 ptssince 2000
from 63.6% in 2000
35.3% rent
Vacancy rate
8.1%
+1.5 ptssince 2009
from 6.6% in 2009
US average: 10.0%
Persons per household
2.44 people
+4%since 2009
from 2.35 people in 2009
US average: 2.54
Owner cost-burdened
32.2%
−9.5 ptssince 2009
from 41.7% in 2009
US average: 22.9%
Renter cost-burdened
52.9%
+1.8 ptssince 2009
from 51.1% in 2009
US average: 47.4%
Afford Score
10.1
+1%since 2009
from 10.0 in 2009
1990 – 2024
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Gentrification Score
69
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04

Race & ethnicity

2000
White, non-Hispanic78.6%(194,254)
Black2.8%(6,946)
Hispanic / Latino11.1%(27,351)
Asian4.5%(11,078)
Other0%
2024
White, non-Hispanic65.1%(167,816)
Black2.1%(5,379)
Hispanic / Latino19.5%(50,216)
Asian6.1%(15,705)
Other7.3%(18,853)
Diversity Score
66
+28%since 2009
from 52 in 2009
1990 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Segregation Score
32
−3%since 2020
from 33 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Mexican7.9%(20,271)
Central American6.8%(17,573)
Guatemalan5%(12,818)
South American1.8%(4,650)
Salvadoran1.2%(3,159)
Peruvian0.7%(1,721)
Spaniard0.5%(1,343)
Puerto Rican0.5%(1,250)
Nicaraguan0.4%(963)
Ecuadorian0.3%(808)
Colombian0.3%(785)
Dominican0.2%(475)
+ 9 more hispanic origin groups with data
Argentine0.2%(459)
Cuban0.2%(452)
Chilean0.1%(335)
Costa Rican0.1%(228)
Honduran0.1%(218)
Venezuelan0.1%(208)
Panamanian0.1%(187)
Uruguayan0.1%(185)
Bolivian0%(119)
Asian origin
Chinese1.7%(4,422)
Filipino1%(2,503)
Asian Indian0.9%(2,280)
Vietnamese0.6%(1,473)
Japanese0.5%(1,378)
Korean0.5%(1,282)
Thai0.1%(373)
Pakistani0.1%(267)
Cambodian0.1%(243)
Nepalese0.1%(185)
Taiwanese0.1%(142)
Indonesian0%(100)
+ 7 more asian origin groups with data
Laotian0%(50)
Hmong0%(22)
Malaysian0%(13)
Mien0%(12)
Pacific Islander origin
Fijian0.1%(227)
Chamorro0%(48)
Tongan0%(29)
Samoan0%(14)
Ancestry
English13.9%(35,782)
German13.3%(34,303)
Irish13.2%(34,173)
Italian7%(17,994)
Polish2.9%(7,511)
French2.9%(7,364)
Scottish2.4%(6,263)
American2.3%(5,849)
Swedish2.2%(5,559)
Russian2.1%(5,542)
Norwegian1.5%(3,757)
Dutch1.2%(3,018)
+ 46 more ancestry groups with data
British1.1%(2,914)
Scotch-Irish1%(2,628)
Greek1%(2,496)
Portuguese0.9%(2,427)
Danish0.9%(2,421)
Ukrainian0.9%(2,294)
Arab0.9%(2,259)
Iranian0.9%(2,247)
Swiss0.9%(2,212)
Welsh0.7%(1,781)
Hungarian0.6%(1,460)
Austrian0.6%(1,433)
Brazilian0.5%(1,399)
Lithuanian0.5%(1,320)
Czech0.5%(1,187)
Lebanese0.4%(932)
Canadian0.3%(808)
Finnish0.3%(789)
Croatian0.3%(650)
Romanian0.2%(553)
Armenian0.2%(516)
Belgian0.2%(504)
Australian0.2%(493)
West Indian0.2%(488)
Turkish0.1%(372)
Syrian0.1%(369)
Jamaican0.1%(283)
Latvian0.1%(249)
Slovak0.1%(215)
Bulgarian0.1%(205)
Slovene0.1%(186)
Palestinian0.1%(153)
Ethiopian0.1%(152)
Israeli0.1%(151)
Serbian0%(106)
Jordanian0%(89)
Egyptian0%(76)
Moroccan0%(62)
Haitian0%(58)
Nigerian0%(55)
Iraqi0%(18)
Section 05

Education

Bachelor's degree or higher
61.1%
+9.8 ptssince 2000
from 51.3% in 2000
US average: 35.6%
High school or higher
92.8%
+1.5 ptssince 2000
from 91.2% in 2000
US average: 89.6%
Graduate degree
27.6%
+7.1 ptssince 2000
from 20.5% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
27.4 min
+10%since 2000
from 24.9 min in 2000
US average: 26.5
Drive alone to work
51.8%
−15.3 ptssince 2009
from 67.1% in 2009
US average: 68.9%
Carpooled to work
7.1%
−2.3 ptssince 2009
from 9.4% in 2009
US average: 8.5%
Public transit
3.6%
−4.7 ptssince 2009
from 8.3% in 2009
US average: 3.2%
Worked from home
31.5%
+21.8 ptssince 2009
from 9.7% in 2009
US average: 15.0%
Walked to work
3.5%
+0.6 ptssince 2009
from 2.9% in 2009
US average: 2.4%
Biked to work
1.2%
Unchangedsince 2009
from 1.2% in 2009
US average: 0.4%
No vehicle available
4.9%
−0.2 ptssince 2009
from 5.1% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
6.1%
−0.3 ptssince 2011
from 6.3% in 2011
US average: 5.2%
Labor force participation
62.3%
−2.9 ptssince 2011
from 65.2% in 2011
US average: 63.5%
Women 20-64 in the labor force
76.2%
−0.5 ptssince 2020
from 76.7% in 2020
US average: 74.6%
Self-employed
11.6%
+0.5 ptssince 2009
from 11.1% in 2009
US average: 13.1%
Management & professional
57.9%
+8.2 ptssince 2009
from 49.7% in 2009
US average: 42.5%
Section 08

People & community

Male
49.2%
−0.7 ptssince 2009
from 49.9% in 2009
Female
50.8%
+0.7 ptssince 2009
from 50.1% in 2009
Foreign born
19.6%
+1.3 ptssince 2009
from 18.3% in 2009
US average: 14.1%
Veterans
3.8%
−4.9 ptssince 2009
from 8.7% in 2009
US average: 6.2%
With a disability
10.0%
+1.4 ptssince 2012
from 8.6% in 2012
US average: 13.3%
Uninsured
3.8%
−5.1 ptssince 2013
from 8.9% in 2013
US average: 8.4%
Broadband at home
95.8%
+6.9 ptssince 2017
from 88.9% in 2017
US average: 91.0%
Computer in household
97.7%
+1.6 ptssince 2020
from 96.1% in 2020
US average: 95.5%
Same house as last year
89.7%
+2.5 ptssince 2020
from 87.2% in 2020
US average: 87.7%
English only at home
76.1%
−1.0 ptssince 2016
from 77.1% in 2016
US average: 77.7%
Spanish at home
13.9%
+0.9 ptssince 2016
from 13.0% in 2016
US average: 13.6%
Marital status
Men 15+
Never married33.4%(35,614)
Married55.3%(58,965)
Widowed2.3%(2,478)
Divorced8.9%(9,518)
Women 15+
Never married28.1%(31,377)
Married50%(55,907)
Widowed7.6%(8,488)
Divorced14.3%(16,007)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09

Health coverage

Uninsured
3.8%
−5.1 ptssince 2013
from 8.9% in 2013
US average: 8.4%
Employer-based
58.9%
−0.6 ptssince 2020
from 59.5% in 2020
US average: 54.8%
Direct-purchase
20.5%
−2.2 ptssince 2020
from 22.7% in 2020
US average: 13.8%
Medicare
23.5%
+1.0 ptssince 2020
from 22.5% in 2020
US average: 18.4%
Medicaid
14.9%
+2.0 ptssince 2020
from 12.9% in 2020
US average: 20.9%
VA health care
1.0%
−0.1 ptssince 2020
from 1.1% in 2020
US average: 2.2%
Any private
76.5%
−3.0 ptssince 2020
from 79.5% in 2020
US average: 67.1%
Any public
36.0%
+2.8 ptssince 2020
from 33.2% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)12.8%(1,015)
US avg: 26.4%
Gulf War (1990s)12.9%(1,024)
US avg: 24.3%
Vietnam era44.2%(3,495)
US avg: 33.1%
Korean War8%(631)
US avg: 4.5%
World War II3%(235)
US avg: 1%

Share of the 7,912 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time

Marin County, decade by decade

Marin County population, inflation-adjusted income and home value, education, and diversity by year
YearPopulationMedian household incomeMedian home valueBachelor's degree+Diversity score
1990230,096$116,509$851,78444.0%33.7
2000247,289$129,895$898,62251.3%45.9
2010252,409$128,418$1,248,67954.1%55.1
2020262,321$147,470$1,277,00460.2%65.2
2024257,969$149,091$1,507,30061.1%66.2

Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.

Drill deeper

Places similar to Marin County

Forsyth County
Pop 282,805
Howard County
Pop 339,183
Douglas County
Pop 399,396
Santa Cruz County
Pop 258,852
Places similar to Marin County
Head to head

Compare Marin County to nearby counties

MARIN COUNTY VS
San Francisco County
Income$140,970−5%
Home value$1,394,500−7%
Population826,079+226%
SEE FULL COMPARISON →
MARIN COUNTY VS
Sonoma County
Income$104,674−30%
Home value$815,500−46%
Population486,444+92%
SEE FULL COMPARISON →
MARIN COUNTY VS
Napa County
Income$111,471−25%
Home value$869,500−42%
Population132,949−48%
SEE FULL COMPARISON →
MARIN COUNTY VS
Contra Costa County
Income$127,229−15%
Home value$866,800−42%
Population1,170,070+361%
SEE FULL COMPARISON →
Frequently asked

How many people live in Marin County, California?

Marin County, California has about 257,969 residents according to the 2024 American Community Survey.

What is the median household income in Marin County, California?

The typical household in Marin County, California earns about $149,091 a year. Half of households make more than that, and half make less.

Is Marin County, California expensive?

In Marin County, California, the median home is worth about $1,507,300, and the typical rent is about $2,668 a month.

How educated are people in Marin County, California?

About 61.1% of adults age 25 and over in Marin County, California hold a bachelor's degree or higher.

What is the poverty rate in Marin County, California?

About 8.3% of people in Marin County, California live below the federal poverty line.

Has Marin County, California grown since 1990?

Yes, Marin County, California has grown since 1990. The population has added about 27,873 residents, a change of about 12 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →