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 2026 population of 13,754. Mill Valley is currently declining at a rate of -0.54% annually and its population has decreased by -3.16% since the most recent census, which recorded a population of 14,203 in 2020.

The median household income in Mill Valley is $206,212 with a poverty rate of 5.91%. The median age in Mill Valley is 48.7 years: 45.7 years for males, and 50.1 years for females. For every 100 females there are 92.7 males.

13.8K
Total Population
2,876
Density (mi²)
-75 -0.54%
Growth

Mill Valley Population

Mill Valley Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202613,754-75-0.54%
202513,829-75-0.54%
202413,904530.38%
202313,851-124-0.89%
202213,975-169-1.19%
202114,144-59-0.42%
202014,203-28-0.2%
201914,438-47-0.32%
201814,485-8-0.06%
201714,493-58-0.4%
201614,551130.09%
201514,538380.26%
201414,5001120.78%
201314,3881611.13%
201214,2271080.76%
201114,1191851.33%
201013,934330.24%
200013,6005624.31%
199013,038710.55%
198012,967250.19%
197012,9422,53124.31%
196010,4113,08042.01%
19507,3312,48451.25%
19404,84768316.4%
19304,1641,61063.04%
19202,55430.12%
19102,551-10,979-81.15%

Median Age

Overall: 48.7 years
Female: 50.1 years
Male: 45.7 years

Mill Valley Adults

There are 11,405 adults, (3,287 of whom are seniors) in Mill Valley.

Sex Ratio

Female: 7,271 (51.9%)
Male: 6,741 (48.1%)

Demographics

The racial composition of Mill Valley includes 81.23% White, 8.39% Asian, and smaller percentages for other race, Black or African American, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White11,38281.23%
Asian1,1768.39%
Two or more races9756.96%
Other race3432.45%
Black or African American1120.8%
Native American240.17%
Race
Population ↓
Percentage (of total)
Two or more races2842.03%
Other race1781.27%
White1581.13%
Native American240.17%
Black or African American130.09%
Asian110.08%
Race
Population ↓
Percentage (of total)
White11,22480.1%
Asian1,1658.31%
Two or more races6914.93%
Other race1651.18%
Black or African American990.71%

Mill Valley Marital Status

Economics and Income Statistics

Mill Valley 's average per capita income is $107,418. Household income levels show a median of $206,212. The poverty rate stands at 5.91%.

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$371,046
Married Families$250,001-
Households$206,212$294,061
Non Families$108,594$144,880

$107,418

Average Income

$206,212

Median Household Income

5.91%

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)