|Contra Costa County and the state of California|
|• State Senate||Mark DeSaulnier (D)|
|• State Assembly||Joan Buchanan (D)|
|• U. S. Congress||George Miller (D)|
|• Total||1.357 sq mi (3.516 km2)|
|• Land||1.357 sq mi (3.516 km2)|
|• Water||0 sq mi (0 km2) 0%|
|Elevation||528 ft (161 m)|
|• Density||850/sq mi (330/km2)|
|Time zone||PST (UTC-8)|
|• Summer (DST)||PDT (UTC-7)|
|GNIS feature IDs||1655967, 2408668|
Diablo is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 1,158 at the 2010 census. It is located 2.5 miles (4.0 km) east-northeast of Danville. "Diablo" is Spanish for devil.
According to the United States Census Bureau, the CDP has a total area of 1.4 square miles (3.6 km2), all of it land.
A post office was established at Diablo in 1916.
The 2010 United States Census reported that Diablo had a population of 1,158. The population density was 853.1 people per square mile (329.4/km²). The racial makeup of Diablo was 1,065 (92.0%) White, 1 (0.1%) African American, 2 (0.2%) Native American, 55 (4.7%) Asian, 0 (0.0%) Pacific Islander, 5 (0.4%) from other races, and 30 (2.6%) from two or more races. Hispanic or Latino of any race were 39 persons (3.4%).
The Census reported that 1,102 people (95.2% of the population) lived in households, 56 (4.8%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized.
There were 412 households, out of which 135 (32.8%) had children under the age of 18 living in them, 315 (76.5%) were opposite-sex married couples living together, 17 (4.1%) had a female householder with no husband present, 11 (2.7%) had a male householder with no wife present. There were 8 (1.9%) unmarried opposite-sex partnerships, and 1 (0.2%) same-sex married couples or partnerships. 57 households (13.8%) were made up of individuals and 31 (7.5%) had someone living alone who was 65 years of age or older. The average household size was 2.67. There were 343 families (83.3% of all households); the average family size was 2.96.
The population was spread out with 275 people (23.7%) under the age of 18, 57 people (4.9%) aged 18 to 24, 149 people (12.9%) aged 25 to 44, 423 people (36.5%) aged 45 to 64, and 254 people (21.9%) who were 65 years of age or older. The median age was 49.3 years. For every 100 females there were 94.9 males. For every 100 females age 18 and over, there were 95.4 males.
There were 439 housing units at an average density of 323.4 per square mile (124.9/km²), of which 380 (92.2%) were owner-occupied, and 32 (7.8%) were occupied by renters. The homeowner vacancy rate was 1.8%; the rental vacancy rate was 3.0%. 1,033 people (89.2% of the population) lived in owner-occupied housing units and 69 people (6.0%) lived in rental housing units.
As of the census of 2000, there were 988 people, 341 households, and 308 families residing in the CDP. The population density was 1,016.6 people per square mile (393.3/km²). There were 348 housing units at an average density of 357.0 per square mile (138.1/km²). The racial makeup of the CDP was 94.64% White, 0.61% Black or African American, 2.94% Asian, 0.61% from other races, and 1.21% from two or more races. 3.54% of the population were Hispanic or Latino of any race.
In terms of real estate prices, Forbes magazine rated Diablo the fourth most expensive ZIP code in the United States.
There were 341 households out of which 37.8% had children under the age of 18 living with them, 85.3% were married couples living together, 3.5% had a female householder with no husband present, and 9.4% were non-families. 8.2% of all households were made up of individuals and 4.7% had someone living alone who was 65 years of age or older. The average household size was 2.90 and the average family size was 3.03.
In the CDP the population was spread out with 26.8% under the age of 18, 3.8% from 18 to 24, 17.1% from 25 to 44, 38.6% from 45 to 64, and 13.7% who were 65 years of age or older. The median age was 46 years. For every 100 females there were 96.0 males. For every 100 females age 18 and over, there were 90.3 males.
The median income for a household in the CDP was $197,904, and the median income for a family was in excess of $200,000. Males had a median income of $190,000 versus $62,614 for females. The per capita income for the CDP was $95,419. None of the population or families were below the poverty line.
- "Senators". State of California. Retrieved March 29, 2013.
- "Members Assembly". State of California. Retrieved March 29, 2013.
- "California's 11th Congressional District - Representatives & District Map". Civic Impulse, LLC. Retrieved March 9, 2013.
- U.S. Census
- "Diablo". Geographic Names Information System, U.S. Geological Survey.
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Quill Driver Books. p. 624. ISBN 9781884995149.
- All data are derived from the United States Census Bureau reports from the 2010 United States Census, and are accessible on-line here. The data on unmarried partnerships and same-sex married couples are from the Census report DEC_10_SF1_PCT15. All other housing and population data are from Census report DEC_10_DP_DPDP1. Both reports are viewable online or downloadable in a zip file containing a comma-delimited data file. The area data, from which densities are calculated, are available on-line here. Percentage totals may not add to 100% due to rounding. The Census Bureau defines families as a household containing one or more people related to the householder by birth, opposite-sex marriage, or adoption. People living in group quarters are tabulated by the Census Bureau as neither owners nor renters. For further details, see the text files accompanying the data files containing the Census reports mentioned above.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.