San Marino, CA Profile: Facts, Map & Data


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San Marino, California - Basic Facts

The City of San Marino had a population of 13,304 as of July 1, 2018. San Marino ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for San Marino is located at latitude 34.1227 and longitude -118.1129 in Los Angeles County. The formal boundaries for the City of San Marino (see map below) encompass a land area of 3.77 sq. miles and a water area of 0.01 sq. miles. Los Angeles County is in the Pacific time zone (GMT -8). The elevation is 564 feet.

The City of San Marino (GNIS ID: 2411799) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of San Marino is located within Pasadena CCD of Los Angeles County.

Beneath the boundary map are tables with San Marino population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of San Marino, CA Boundary Map

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San Marino, CA Data & Demographics (As of July 1, 2018)


Total Population 13,304
Population in Households 13,221
Population in Familes 12,418
Population in Group Qrtrs 83
Population Density2 3,531
Diversity Index3 59


Median Household Income $170,966
Average Household Income $241,863
Per Capita Income $79,205


Total Housing Units 4,553 (100%)
Owner Occupied HU 3,931 (86.3%)
Renter Occupied HU 411 ( 9.0%)
Vacant Housing Units 211 ( 4.6%)
Median Home Value $1,581,773
Average Home Value $1,625,890


Total Households 4,342
Average Household Size 3.04
Family Households 3,748
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.14% 0.21%
Households 0.03% 0.09%
Families 0.06% 0.12%
Median Household Income   2.48%
Per Capita Income   2.12%

San Marino, CA - Peer Comparisons by Rank and Percentile

The table below compares San Marino to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 433 72nd
Population Density # 382 75th
Diversity Index # 857 44th
Median Household Income # 30 98th
Per Capita Income # 57 96th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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