Castle Hill Flag

Castle Hill

County Seat:
No
Area (mi²):
0.585
State:
California

Castle Hill is a CDP located in Contra Costa County, California. Castle Hill has a 2026 population of 1,304. Castle Hill 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 Castle Hill is $250,001 with a poverty rate of 0.19%. The median age in Castle Hill is 43.9 years: 46.5 years for males, and 43.3 years for females. For every 100 females there are 82.6 males.

1.3K
Total Population
2,231
Density (mi²)

Castle Hill Population

Castle Hill Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,30400%
20251,30410.08%

Median Age

Overall: 43.9 years
Female: 43.3 years
Male: 46.5 years

Castle Hill Adults

There are 710 adults, (187 of whom are seniors) in Castle Hill.

Sex Ratio

Female: 562 (54.8%)
Male: 464 (45.2%)

Demographics

The racial composition of Castle Hill includes 72.32% White, 15.69% Asian, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White74272.32%
Asian16115.69%
Two or more races12311.99%
Race
Population ↓
Percentage (of total)
White74272.32%
Asian16115.69%
Two or more races12311.99%

Castle Hill Marital Status

Economics and Income Statistics

Castle Hill 's average per capita income is $169,118. Household income levels show a median of $250,001. The poverty rate stands at 0.19%.

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$250,001$298,957
Families$250,001$332,554
Married Families$250,001-
Non Families-$85,479

$169,118

Average Income

$250,001

Median Household Income

0.19%

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)