Port Costa Flag

Port Costa

County Seat:
No
Area (mi²):
0.158
State:
California

Port Costa is a CDP located in Contra Costa County, California. Port Costa has a 2025 population of 266. Port Costa is currently growing at a rate of 1.92% annually and its population has increased by 9.92% since the most recent census, which recorded a population of 242 in 2020.

The average household income in Port Costa is $49,289 with a poverty rate of 0%. The median age in Port Costa is 68.5 years: 77 years for males, and 67.1 years for females.

266
Total Population
1,681
Density (mi²)
5 1.92%
Growth

Port Costa Population

Port Costa Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Port Costa includes 84.02% White, 9.79% other race, and smaller percentages for Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White16384.02%
Other race199.79%
Two or more races126.19%
Black or African American00%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%

Port Costa Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Port Costa's average per capita income is $0. Household income levels show a median of $0. The poverty rate stands at 0%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Non Families$29,274$35,910
Households-$49,289
Families--
Married Families--

$0

Average Income

$0

Median Household Income

0%

Poverty Rate

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)