Port Costa, CA Profile: Facts & Data

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Port Costa, California - Basic Facts

The Port Costa CDP(1) had a population of 188 as of July 1, 2023. Port Costa ranks in the lower quartile for 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 Port Costa is located at latitude 38.0463 and longitude -122.1833 in Contra Costa County. The formal boundaries for the Port Costa Census Designated Place encompass a land area of 0.16 sq. miles and a water area of 0 sq. miles. Contra Costa County is in the Pacific time zone (GMT -8).

The Port Costa Census Designated Place 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 Port Costa Census Designated Place is located within West Contra Costa CCD of Contra Costa County.


  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Port Costa 2023 Demographic Data
  2. Growth Rates for Port Costa (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2023 Demographics
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Port Costa, CA Data & Demographics (As of July 1, 2023)

POPULATION

Total Population 188 (100%)
Population in Households 188 (100.0%)
Population in Families 123 (65.4%)
Population in Group Quarters1 0
Population Density 1,188
Diversity Index2 53
 
 

INCOME

Median Household Income $116,353
Average Household Income $137,616
% of Income for Mortgage4 42%
Per Capita Income $75,396
Wealth Index5 144
Socioeconomic Status Index6 Moderate (62.1)
 

HOUSING

Total HU (Housing Units) 105 (100%)
Owner Occupied HU 65 (61.9%)
Renter Occupied HU 38 (36.2%)
Vacant Housing Units 2 ( 1.9%)
Median Home Value $812,500
Average Home Value $801,154
Housing Affordability Index3 59
 

HOUSEHOLDS

Total Households 103
Average Household Size 1.83
Family Households 48
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

2020-2023 2023-2028
Population -0.33% -0.11%
Households -0.30% -0.19%
Families   1.22%
Median Household Income   -1.57%
Per Capita Income   2.68%
Owner Occupied HU   0.00%

Port Costa, CA - Peer Comparisons by Rank and Percentile

The table below compares Port Costa to the other 1,611 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2023 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 # 1410 13th
Population Density # 758 53rd
Median Household Income # 256 84th
Housing Affordability Index # 885 55th
Per Capita Income # 156 90th
Diversity Index # 1228 24th

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

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