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 2026 population of 11,920. San Marino is currently declining at a rate of -0.77% annually and its population has decreased by -4.45% since the most recent census, which recorded a population of 12,475 in 2020.

The median household income in San Marino is $214,167 with a poverty rate of 6.73%. The median age in San Marino is 45.7 years: 43.6 years for males, and 48.3 years for females. For every 100 females there are 102.4 males.

11.9K
Total Population
3,165
Density (mi²)
-92 -0.77%
Growth

San Marino Population

San Marino Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202611,920-92-0.77%
202512,012-93-0.77%
202412,105260.22%
202312,079-49-0.4%
202212,128-128-1.04%
202112,256-252-2.01%
202012,475-451-3.49%
201912,926-114-0.87%
201813,040-97-0.74%
201713,137-73-0.55%
201613,210-52-0.39%
201513,26230.02%
201413,259340.26%
201313,225360.27%
201213,189410.31%
201113,148460.35%
201013,102-45-0.34%
200012,945-14-0.11%
199012,959-348-2.62%
198013,307-870-6.14%
197014,1775193.8%
196013,6582,42821.62%
195011,2303,05537.37%
19408,1754,445119.17%
19303,7303,146538.7%
192058400%

Median Age

Overall: 45.7 years
Female: 48.3 years
Male: 43.6 years

San Marino Adults

There are 9,305 adults, (2,724 of whom are seniors) in San Marino.

Sex Ratio

Female: 6,035 (49.4%)
Male: 6,181 (50.6%)

Demographics

The racial composition of San Marino includes 68.09% Asian, 22.68% White, and smaller percentages for other race, Black or African American, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
Asian8,31868.09%
White2,77022.68%
Two or more races9737.96%
Other race1321.08%
Black or African American150.12%
Native American80.07%
Race
Population ↓
Percentage (of total)
Two or more races4093.35%
Other race1321.08%
White1040.85%
Native American80.07%
Race
Population ↓
Percentage (of total)
Asian8,31868.09%
White2,66621.82%
Two or more races5644.62%
Black or African American150.12%

San Marino Marital Status

Economics and Income Statistics

San Marino 's average per capita income is $99,250. Household income levels show a median of $214,167. The poverty rate stands at 6.73%.

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$238,125$328,941
Households$214,167$310,978
Non Families$94,438$186,622

$99,250

Average Income

$214,167

Median Household Income

6.73%

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)