San Diego, CA Profile: Facts, Map & Data


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San Diego, California - Basic Facts

The City of San Diego is the 2nd largest city in California with a population of 1,405,422 as of July 1, 2018. San Diego 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 Diego is located at latitude 32.8153 and longitude -117.135 in San Diego County. The formal boundaries for the City of San Diego (see map below) encompass a land area of 325.19 sq. miles and a water area of 47.2 sq. miles. San Diego County is in the Pacific time zone (GMT -8). The elevation is 62 feet.

The City of San Diego (GNIS ID: 2411782) 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 Diego is located within San Diego CCD of San Diego County.

Beneath the boundary map are tables with San Diego 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 Diego: Davis' Folly, Graytown, New San Diego, San Miguel.

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City of San Diego, CA Boundary Map

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


Total Population 1,405,422
Population in Households 1,357,735
Population in Familes 1,018,888
Population in Group Qrtrs 47,687
Population Density2 4,322
Diversity Index3 80


Median Household Income $72,590
Average Household Income $102,953
Per Capita Income $39,033


Total Housing Units 551,269 (100%)
Owner Occupied HU 243,948 (44.3%)
Renter Occupied HU 277,301 (50.3%)
Vacant Housing Units 30,020 ( 5.4%)
Median Home Value $579,597
Average Home Value $699,976


Total Households 521,249
Average Household Size 2.6
Family Households 307,388
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 0.93% 0.93%
Households 0.93% 0.96%
Families 0.91% 0.91%
Median Household Income   3.1%
Per Capita Income   3.4%

San Diego, CA - Peer Comparisons by Rank and Percentile

The table below compares San Diego 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 # 2 100th
Population Density # 289 81st
Diversity Index # 398 74th
Median Household Income # 496 67th
Per Capita Income # 424 72nd

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

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