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 2026 population of 195. Port Costa is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Port Costa is $38,929 with a poverty rate of 0%. The median age in Port Costa is 67.3 years: 69.4 years for males, and 67.2 years for females. For every 100 females there are 157.4 males.

195
Total Population
1,233
Density (mi²)

Port Costa Population

Port Costa Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202619500%
202519510.52%

Median Age

Overall: 67.3 years
Female: 67.2 years
Male: 69.4 years

Port Costa Adults

There are 258 adults, (197 of whom are seniors) in Port Costa.

Sex Ratio

Female: 115 (38.9%)
Male: 181 (61.1%)

Demographics

The racial composition of Port Costa includes 90.2% White, 6.08% other race, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White26790.2%
Other race186.08%
Two or more races113.72%
Race
Population ↓
Percentage (of total)
Other race186.08%
Two or more races113.72%
Race
Population ↓
Percentage (of total)
White26790.2%

Port Costa Marital Status

Economics and Income Statistics

Port Costa 's average per capita income is $36,583. Household income levels show a median of $38,929. 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
Households$38,929$47,451
Non Families$29,780$38,014
Families-$61,299
Married Families--

$36,583

Average Income

$38,929

Median Household Income

0%

Poverty Rate

Nearby Cities

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)