Mill Valley Flag

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.

13.5K
Total Population
2,827
Density (mi²)
-136 -1%
Growth

Mill Valley Population

Mill Valley Population

Data after 2023 is projected based on recent change

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)
White11,71383.28%
Asian1,0097.17%
Two or more races9556.79%
Other race2421.72%
Black or African American1270.9%
Native American180.13%

Mill Valley Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)