San Marino, CA Demographics

What is the population of San Marino?

There are 12,279 residents in San Marino, with a median age of 45. Of this, 51.78% are males and 48.22% are females. US-born citizens make up 51.66% of the resident pool in San Marino, while non-US-born citizens account for 31.59%. Additionally, 16.75% of the population is represented by non-citizens. A total of 10,813 people in San Marino currently live in the same house as they did last year.
Y-o-Y Change
Total Population 12,279 -1.3%
Male Population 6,358 0.2%
Female Population 5,921 -2.9%
Male Population 51.78%
Female Population 48.22%
Y-o-Y Change
Median Age 45 -1.1%
Citizen U.S. Born 6,343 0.8%
Citizen not U.S. Born 3,879 3.0%
Not Citizen 2,057 -13.8%
Citizen U.S. Born 51.66%
Citizen not U.S. Born 31.59%
Not Citizen 16.75%
Y-o-Y Change
Moved from Abroad 713 -8.3%
Moved from Same County 382 -35.6%
Moved from Same State 188 -1.6%
Moved from Different State 150 -2.6%
Same House as Last Year 10,813 1.2%
Moved from Abroad 5.82%
Moved from Same County 3.12%
Moved from Same State 1.54%
Moved from Different State 1.22%
Same House as Last Year 88.3%

What are the employment statistics in San Marino?

White-collar workers make up 93.31% of the working population in San Marino, while blue-collar employees account for 6.69%. There are also 2,496 entrepreneurs in San Marino (23.13% of the workforce); 6,430 workers employed in private companies (59.58%); and 1,014 people working in governmental institutions (9.4%).
Y-o-Y Change
White Collar 10,070 99.4%
Blue Collar 722 66.4%
White Collar 93.31%
Blue Collar 6.69%
Y-o-Y Change
Self Employees 2,496 74.7%
Private Companies 6,430 92.3%
Governmental Workers 1,014 143.8%
Not for Profit Companies 852 187.8%
Self Employees 23.13%
Private Companies 59.58%
Governmental Workers 9.4%
Not for Profit Companies 7.89%

How many households are there in San Marino?

There are a total of 3,807 households in San Marino, each made up of around 3 members. Family establishments represent 84.84% of these San Marino households, while non-family units account for the remaining 15.16%. Additionally, 35.67% of households have children and 64.33% of households are without children.
Y-o-Y Change
Total households 3,807 -2.8%
Average People per Household 3 -4.5%
Family Households 3,230 -4.1%
Non-Family Households 577 5.5%
Family Households 84.84%
Non-Family Households 15.16%
Y-o-Y Change
Households with Children 1,358 -5.5%
Households without Children 2,449 -1.2%
Households with Children 35.67%
Households without Children 64.33%

What are the median and average incomes in San Marino?

The average annual household income in San Marino is $285,362, while the median household income sits at $187,633 per year. Residents aged 25 to 44 earn $188,005, while those between 45 and 64 years old have a median wage of $250,001. In contrast, people younger than 25 and those older than 65 earn less, at $2,499 and $121,016, respectively.
Y-o-Y Change
Average Household Income $285,362 5.1%
Median Household Income $187,633 7.7%
People below Poverty Level 712 -36.6%
People above Poverty Level 11,534 2.3%

How many homeowners and renters are there in San Marino?

There are 4,363 housing units in San Marino, and the median year in which these properties were built is 1943. Of the 3,807 occupied housing units in San Marino, 82.74% are owner-occupied, while 17.26% have renters living in them. Meanwhile, properties bought with mortgages account for 54.16% of the units, and the median value of a home with a mortgage is $2,000,001. In general, housing costs reach $3,966 per month in San Marino.
Y-o-Y Change
Housing Units 4,363 -3.8%
Median Year Built 1943 0.1%
Built in 1939 or Earlier 1,771 -11.7%
Built between 1940 and 1949 1,290 12.8%
Built between 1950 and 1959 570 -10.1%
Built between 1960 and 1969 370 12.1%
Built between 1970 and 1979 84 -41.7%
Built between 1980 and 1989 48 -4.0%
Built between 1990 and 1999 106 0.0%
Built between 2000 and 2009 31 -13.9%
Built between 2010 and 2019 69 -1.4%
Built in 2020 or Later 24 33.3%
Y-o-Y Change
Occupied Housing Units 3,807 -2.8%
Owner Occupied 3,150 -3.2%
Renter Occupied 657 -0.6%
Owner Occupied 82.74%
Renter Occupied 17.26%
Y-o-Y Change
With Mortgage 1,706 -4.0%
Without Mortgage 1,444 -2.2%
Median Value with Mortgage $2,000,001 0.0%
Median Value without Mortgage $2,000,001 0.0%
Median Housing Costs per Month $3,966 2.1%
With Mortgage 54.16%
Without Mortgage 45.84%

What is the level of education in San Marino?

Approximately 7.66% of the population in San Marino holds a high school degree (that's 718 residents), while 9.8% have attained a college certificate (919 locals) and 36.92% have a bachelor's degree (3,462 people).
Y-o-Y Change
No High School 190 -17.0%
Some High School 718 3.2%
Some College 919 -8.9%
Associate Degree 327 4.5%
Bachelor's Degree 3,462 -11.4%
Graduate Degree 3,762 10.0%
No High School 2.03%
Some High School 7.66%
Some College 9.8%
Associate Degree 3.49%
Bachelor's Degree 36.92%
Graduate Degree 40.12%

What is the marital status of San Marino residents?

A total of 2,875 people in San Marino have never been married (which represents 28.75% of the total population), while 6,233 of them are wedded (62.34%). Separated and divorced residents are in smaller numbers, at 47 (0.47%) and 285 (2.85%), respectively.
Y-o-Y Change
Never Married 2,875 -6.6%
Married 6,233 -2.5%
Separated 47 0.0%
Widowed 606 7.5%
Divorced 285 -14.2%
Never Married 28.75%
Married 62.34%
Separated 0.47%
Widowed 6.06%
Divorced 2.85%

What are the most common means of transportation in San Marino?

The top three means of transportation people in San Marino use to get to work are: car, bus or trolley bus and walking. A total of 3,472 residents commute by car, 174 prefer going to work by bus or trolley bus and 95 by walking
Y-o-Y Change
Car 3,472 -8.2%
Bus or TrolleyBus 174 10.1%
Subway or Elevated 85 N/A
Bicycle 9 N/A
Walk 95 187.9%

What is the median and average household income in San Marino by zipcode?

ZipCode Population Number of Households Median Income Average Income
91108 12,464 3,934 $186,023 $282,186

Methodology & Disclaimers

Demographic data shown in this section was gathered from the latest U.S. Census Bureau release, the 2023 American Community Survey. The information is updated yearly, as soon as new data is made available by the US Census Bureau.
No representation, guarantee or warranty is made as to the accuracy or completeness of information modified or aggregated for specific neighborhoods and/or zip codes.