San Marino is a city located in Los Angeles County California. With a 2020 population of 12,387, it is the 445th largest city in California and the 3480th largest city in the United States. San Marino is currently declining at a rate of -0.51% annually and its population has decreased by -4.86% since the most recent census, which recorded a population of 13,020 in 2020. Spanning over 4 miles, San Marino has a population density of 3,289 people per square mile.
The average household income in San Marino is $232,829 with a poverty rate of 7.12%. The median rental costs in recent years comes to $3,500 per month, and the median house value is $2.00 Mn. The median age in San Marino is 46.9 years, 44.7 years for males, and 48.3 years for females.
According to the most recent ACS, the racial composition of San Marinowas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among islander people with a rate of 100.00%.
The highest rate of bachelors degrees is among islander people with a rate of 100.00%.
46.80% of San Marino residents speak only English, while 53.20% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 45.03% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in San Marino is Black, with 8.82% below the poverty level.
The race least likely to be in poverty in San Marino is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 3.84%. Among those working part-time, it was 13.53%, and for those that did not work, the poverty rate was 9.19%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in San Marino
56.67% of San Marino residents were born in the United States, with 44.72% having been born in California. 17.54% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.