Diablo Flag

Diablo

County Seat:
No
Area (mi²):
1.364
State:
California

Diablo is a CDP located in Contra Costa County, California. Diablo has a 2026 population of 1,052. Diablo is currently declining at a rate of -0.66% 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 Diablo is $248,150 with a poverty rate of 13.23%. The median age in Diablo is 43.3 years: 43.8 years for males, and 40.8 years for females. For every 100 females there are 79.3 males.

1.1K
Total Population
771
Density (mi²)
-7 -0.66%
Growth

Diablo Population

Diablo Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,052-7-0.66%
20251,059-6-0.56%

Median Age

Overall: 43.3 years
Female: 40.8 years
Male: 43.8 years

Diablo Adults

There are 970 adults, (237 of whom are seniors) in Diablo.

Sex Ratio

Female: 687 (55.8%)
Male: 545 (44.2%)

Demographics

The racial composition of Diablo includes 78.17% White, 13.07% other race, 5.11% Asian, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White96378.17%
Other race16113.07%
Asian635.11%
Two or more races453.65%
Race
Population ↓
Percentage (of total)
Other race786.33%
White594.79%
Two or more races262.11%
Race
Population ↓
Percentage (of total)
White90473.38%
Other race836.74%
Asian635.11%
Two or more races191.54%

Diablo Marital Status

Economics and Income Statistics

Diablo 's average per capita income is $103,576. Household income levels show a median of $248,150. The poverty rate stands at 13.23%.

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
Married Families$250,001-
Families$249,050$390,863
Households$248,150$341,195
Non Families-$138,483

$103,576

Average Income

$248,150

Median Household Income

13.23%

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)