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COUNTY · 2000 CENSUS

Marin County

California · 247,289 residents · 520.141 sq mi
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The short version

Marin County is significantly wealthier than the US average, with a median household income of $71,306. Population has held roughly steady since 1990. 51% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value is $493,300. With a median age of 41.3, the population is older than the US median of 35.2. Households here earn about 50% more than the California median.

At a glance
Wealthier
above the US median
US median: $42,589
Older
median age 41.3
US median: 35.2
More educated
51% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

247,289
+7%since 1990
from 230,096 in 1990
1990 – 2025
475 / sq mi
+7%since 1990
from 442 / sq mi in 1990
US average: 242
41.3
+8%since 1990
from 38.2 in 1990
US average: 35.2
Population, 19902024
227K237K246K256K266K1990201020202024Marin County
2024258K
1990201020202024
Section 02

Income & economy

$71,306
+11%inflation adjusted, since 1990
from $48,544 in 1990
US average: $42,589
1990 – 2024
$44,962
+58%since 1990
from $28,381 in 1990
US average: $21,522
6.6%
+1.4 ptssince 1990
from 5.2% in 1990
US average: 12.4%
Section 03

Housing

$493,300
+5%inflation adjusted, since 1990
from $354,900 in 1990
US average: $120,530
1990 – 2024
$1,162
+7%inflation adjusted, since 1990
from $824 in 1990
US average: $602
63.6%
+1.5 ptssince 1990
from 62.1% in 1990
36.4% rent
6.9
−5%since 1990
from 7.3 in 1990
1990 – 2024
RELATED:See current rent listings in Marin County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic88.9%(204,646)
Black3.5%(7,998)
Hispanic / Latino7.4%(17,004)
Asian4%(9,190)
Diversity Score38.2%(87,959)
2000
White, non-Hispanic78.6%(194,254)
Black2.8%(6,946)
Hispanic / Latino11.1%(27,351)
Asian4.5%(11,078)
Diversity Score40.9%(101,033)
41
+7%since 1990
from 38 in 1990
1990 – 2024
Section 05

Education

51.3%
+7.3 ptssince 1990
from 44.0% in 1990
US average: 24.4%
High school or higher
91.2%
−0.7 ptssince 1990
from 91.9% in 1990
US average: 80.3%
20.5%
+3.6 ptssince 1990
from 17.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

24.9 min
−17%since 1990
from 30.1 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

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Frequently asked

How many people live in Marin County, California?

Marin County, California has about 247,289 residents according to the 2000 Census.

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

The typical household in Marin County, California earns about $71,306 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 $493,300, and the typical rent is about $1,162 a month.

How educated are people in Marin County, California?

About 51.3% 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 6.6% 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 17,193 residents, a change of about 7 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 →

Marin County, California (2000): demographics, income & housing data · CensusEasy