Mill Valley

County:: Marin County
County Seat:: No
Area (mi²):: 4.782
State:: California

Mill Valley is a city located in Marin County, California. Mill Valley has a 2025 population of 13,519. Mill Valley is currently declining at a rate of -1% annually and its population has decreased by -4.8% since the most recent census, which recorded a population of 14,201 in 2020.

The average household income in Mill Valley is $308,154 with a poverty rate of 4.99%.The median age in Mill Valley is 47.2 years: 45.7 years for males, and 48.1 years for females.

Demographics

The racial composition of Mill Valley includes 83.28% White, 7.17% Asian, and smaller percentages for other race, Black or African American, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	11,713	83.28%
Asian	1,009	7.17%
Two or more races	955	6.79%
Other race	242	1.72%
Black or African American	127	0.9%
Native American	18	0.13%

Mill Valley Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mill Valley's average per capita income is $106,494. Household income levels show a median of $208,466. The poverty rate stands at 4.99%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Families	$250,001	$383,458
Married Families	$250,001	-
Households	$208,466	$308,154
Non Families	$117,200	$146,021

$106,494

Average Income

$208,466

Median Household Income

4.99%

Poverty Rate