San Marino, California Population 2023

11,780

San Marino is a city located in Los Angeles County California. San Marino has a 2023 population of 11,780. San Marino is currently declining at a rate of -1.96% annually and its population has decreased by -5.74% since the most recent census, which recorded a population of 12,498 in 2020.

The average household income in San Marino is $235,807 with a poverty rate of 6.06%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in San Marino is 45.6 years, 43.3 years for males, and 46.8 years for females.

San Marino Demographics

According to the most recent ACS, the racial composition of San Marino was:

  • Asian: 66.54%
  • White: 27.21%
  • Two or more races: 3.54%
  • Other race: 2.09%
  • Black or African American: 0.34%
  • Native Hawaiian or Pacific Islander: 0.2%
  • Native American: 0.08%
Land Area (mi²)
3.8 sq mi
Density (mi²)
3,128.10/sq mi
Growth Rate
-1.96% (-235)
Growth Since 2020
-5.74% (-718)
The current population of San Marino, California is 11,780 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 12,498.

San Marino, California Population 2023

Population by Race

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Asian

White

Two or more races

Other race

Black or African American

Native Hawaiian or Pacific Islander

Native American

San Marino Population by Race

San Marino Population Pyramid 2023

San Marino Median Age

45.6

Total

43.3

Male

46.8

Female

San Marino Adults

There are 9,739 adults, (2,572 of whom are seniors) in San Marino.

San Marino Age Dependency

76.1

Age Dependency Ratio

35.9

Old Age Dependency Ratio

40.2

Child Dependency Ratio

San Marino Sex Ratio

Female6,13748.63%
Male6,48351.37%

San Marino Population by Age

San Marino Renter vs Owner Occupied by Household Type

3.31

Average Family Size

3.17

Average Household Size

84.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

San Marino Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

San Marino Educational Attainment by Sex (over 25)

San Marino Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among native american people with a rate of 100%.

The highest rate of bachelors degrees is among native american people with a rate of 100%.

San Marino Educational Attainment by Race

All

Male

Female

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$78,190

Average Earnings

$107,531

Average Male

$54,036

Average Female

San Marino Earnings by Educational Attainment

San Marino Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

San Marino Language

43.23% of San Marino residents speak only English, while 56.77% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 55.27% of the population.

San Marino Language

San Marino Poverty by Race

rate

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6.06%

Overall Poverty Rate

6.73%

Male Poverty Rate

5.36%

Female Poverty Rate

Poverty in San Marino

The race most likely to be in poverty in San Marino is Black, with 21.21% below the poverty level.

The race least likely to be in poverty in San Marino is White, with 2.03% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.22%. Among those working part-time, it was 10.88%, and for those that did not work, the poverty rate was 8.17%.

San Marino Poverty

rate

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San Marino Poverty Rate by Education

rate

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San Marino Poverty Rate by Employment Status and Sex

San Marino Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

San Marino Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

65.8%

Overall Marriage Rate

66.4%

Male Marriage Rate

65.2%

Female Marriage Rate

San Marino Married by Age and Sex

male

female

San Marino Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 55-64.

San Marino Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

San Marino Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

274

Number of Veterans

274

Male Veterans

Female Veterans

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San Marino Veterans by War

count

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San Marino Veterans by Age

count

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San Marino Veterans by Race

San Marino Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

25.18%

Veteran Disability Rate

San Marino Veterans by Education

LaborForceParticipation

58.2%

Labor Force Participation

56.1%

Employment Rate

3.5%

Unemployment Rate

San Marino Employment by Age

LaborForceParticipation

San Marino Employment by Race

LaborForceParticipation

San Marino Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

42.85%

Born in San Marino

55.61%

Native Born

47.37%

Foreign Born

18.17%

Non Citizen

29.21%

Naturalized

Place of Birth

55.61% of San Marino residents were born in the United States, with 42.85% having been born in California. 18.17% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

San Marino Place of Birth

Note: data after 2021 is projected based on recent change

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San Marino Population by Year