San Lorenzo, CA Profile: Facts, Map & Data


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San Lorenzo, California - Basic Facts

The San Lorenzo Census Designated Place had a population of 25,333 as of July 1, 2018. San Lorenzo ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for San Lorenzo is located at latitude 37.6744 and longitude -122.1351 in Alameda County. The formal boundaries for the San Lorenzo Census Designated Place (see map below) encompass a land area of 2.77 sq. miles and a water area of 0.01 sq. miles. Alameda County is in the Pacific time zone (GMT -8). The elevation is 36 feet.

The San Lorenzo Census Designated Place (GNIS ID: 2409260) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The San Lorenzo Census Designated Place is located within Hayward CCD of Alameda County.

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

Alternate Unofficial Names for San Lorenzo: Lorenzo, Squattersville.

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San Lorenzo Census Designated Place, CA Boundary Map

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


Total Population 25,333
Population in Households 25,267
Population in Familes 22,246
Population in Group Qrtrs 66
Population Density2 9,153
Diversity Index3 86


Median Household Income $81,243
Average Household Income $93,179
Per Capita Income $29,048


Total Housing Units 8,109 (100%)
Owner Occupied HU 5,852 (72.2%)
Renter Occupied HU 2,015 (24.8%)
Vacant Housing Units 242 ( 3.0%)
Median Home Value $451,348
Average Home Value $495,177


Total Households 7,867
Average Household Size 3.21
Family Households 6,135
Average Family Size 4
  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 0.94% 0.91%
Households 0.7% 0.75%
Families 0.7% 0.8%
Median Household Income   2.75%
Per Capita Income   3.05%

San Lorenzo, CA - Peer Comparisons by Rank and Percentile

The table below compares San Lorenzo 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 # 301 80th
Population Density # 81 95th
Diversity Index # 141 91st
Median Household Income # 385 75th
Per Capita Income # 826 46th

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

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