San Marino Flag

San Marino

County Seat:
No
Area (mi²):
3.766
State:
California

San Marino is a city located in Los Angeles County, California. San Marino has a 2025 population of 12,012 . San Marino is currently declining at a rate of -0.77% annually and its population has decreased by -3.71% since the most recent census, which recorded a population of 12,475 in 2020.

The average household income in San Marino is $285,362 with a poverty rate of 5.8%. The median age in San Marino is 45.2 years: 40.8 years for males, and 49 years for females. For every 100 females there are 107.4 males.

12K
Total Population
3,190
Density (mi²)
-93 -0.77%
Growth

San Marino Population

San Marino Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of San Marino includes 68.91% Asian, 23.01% White, and smaller percentages for other race, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Asian (68.91%)

White (23.01%)

Two or more races (6.48%)

Other race (1.05%)

Black or African American (0.33%)

Native Hawaiian or Pacific Islander (0.13%)

Native American (0.08%)

Race
Population
Percentage (of total)
Asian8,46268.91%
White2,82623.01%
Two or more races7966.48%
Other race1291.05%
Black or African American400.33%
Native Hawaiian or Pacific Islander160.13%
Native American100.08%

San Marino Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

San Marino's average per capita income is $81,492. Household income levels show a median of $187,633. The poverty rate stands at 5.8%.

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
Married Families$250,001-
Families$231,648$313,529
Households$187,633$285,362
Non Families$69,830$111,637

$81,492

Average Income

$187,633

Median Household Income

5.8%

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)