Antioch, CA Profile: Facts, Map & Data


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Antioch, California - Basic Facts

The City of Antioch had a population of 108,824 as of July 1, 2016. Antioch 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 Antioch is located at latitude 37.9775 and longitude -121.7976 in Contra Costa County. The formal boundaries for the City of Antioch (see map below) encompass a land area of 28.33 sq. miles and a water area of 0.7 sq. miles. Contra Costa County is in the Pacific time zone (GMT -8). The elevation is 43 feet.

The City of Antioch (GNIS ID: 2409715) 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 Antioch is located within Antioch-Pittsburg CCD of Contra Costa County.

Beneath the boundary map are tables with Antioch population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Antioch: East Antioch, Marshs Landing, Smith's Landing.

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


City of Antioch, CA Boundary Map

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Boundary Maps: Antioch-Pittsburg CCD | Contra Costa County | California Counties

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Antioch, CA Data & Demographics (As of July 1, 2016)


Total Population 108,824
Population in Households 108,148
Population in Familes 93,507
Population in Group Qrtrs 676
Population Density1 3,841
Diversity Index2 86


Total Households 33,746
Average Household Size 3.2
Family Households 26,175
Average Family Size 4


Total Housing Units 36,108 (100%)
Owner Occupied HU 21,174 (58.6%)
Renter Occupied HU 12,572 (34.8%)
Vacant Housing Units 2,362 ( 6.5%)
Median Home Value $313,477
Average Home Value $368,050


Median Household Income $67,050
Average Household Income $85,264
Per Capita Income $26,825
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.98% 1.1%
Households 0.73% 0.96%
Families 0.72% 0.97%
Median Household Income   2.93%
Per Capita Income   1.59%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Antioch, CA - Peer Comparisons by Rank and Percentile

The table below compares Antioch to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2016 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 # 63 96th
Population Density1 # 325 79th
Diversity Index2 # 142 91st
Median Household Income # 477 69th
Per Capita Income # 810 47th

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