Muir Beach

County:: Marin County
County Seat:: No
Area (mi²):: 0.493
State:: California

Muir Beach is a CDP located in Marin County, California. Muir Beach has a 2025 population of 431. Muir Beach is currently growing at a rate of 1.89% annually and its population has increased by 19.72% since the most recent census, which recorded a population of 360 in 2020.

The average household income in Muir Beach is $228,185 with a poverty rate of 10.03%. The median age in Muir Beach is 61.2 years: 59.5 years for males, and 63.7 years for females.

Demographics

The racial composition of Muir Beach includes 93.23% White, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	372	93.23%
Two or more races	27	6.77%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Muir Beach Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Muir Beach's average per capita income is $87,500. Household income levels show a median of $157,500. The poverty rate stands at 10.03%.

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	$344,514
Married Families	$250,001	-
Households	$157,500	$228,185
Non Families	-	$56,019

$87,500

Average Income

$157,500

Median Household Income

10.03%

Poverty Rate