Diablo (Spanish for "Devil") is a census-designated place (CDP) in Contra Costa County, California, United States. The population was 1,255 at the 2020 census.
Geography
According to the United States Census Bureau, the CDP has a total area of , all of it land.
History
A post office was established at Diablo in 1916.<br> 1860–1870 1880-1890<br> 1900 1910 1920<br> 1930 1940 1950<br> 1960 1970 1980<br> 1990
2000 2010
| align = right
Diablo first appeared as a census designated place in the 2000 U.S. census created out of part of the Alamo CDP.
!Pop 2010
!style="background-color: #ffffb3;" |Pop 2020
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|White alone (NH)
|909
|1,035
|style='background: #ffffe6; |1,001
|92.00%
|89.38%
|style='background: #ffffe6; |79.76%
|-
|Black or African American alone (NH)
|6
|0
|style='background: #ffffe6; |8
|0.61%
|0.00%
|style='background: #ffffe6; |0.64%
|-
|Native American or Alaska Native alone (NH)
|0
|2
|style='background: #ffffe6; |5
|0.00%
|0.17%
|style='background: #ffffe6; |0.40%
|-
|Asian alone (NH)
|29
|55
|style='background: #ffffe6; |100
|2.94%
|4.75%
|style='background: #ffffe6; |7.97%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|0
|0
|style='background: #ffffe6; |0
|0.00%
|0.00%
|style='background: #ffffe6; |0.00%
|-
|Other race alone (NH)
|0
|0
|style='background: #ffffe6; |0
|0.00%
|0.00%
|style='background: #ffffe6; |0.00%
|-
|Mixed race or Multiracial (NH)
|9
|27
|style='background: #ffffe6; |61
|0.91%
|2.33%
|style='background: #ffffe6; |4.86%
|-
|Hispanic or Latino (any race)
|35
|39
|style='background: #ffffe6; |80
|3.54%
|3.37%
|style='background: #ffffe6; |6.37%
|-
|Total
|988
|1,158
|style='background: #ffffe6; |1,255
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2020 census
As of the 2020 census, Diablo had a population of 1,255. The population density was .
The age distribution was 21.4% under the age of 18, 6.7% aged 18 to 24, 15.5% aged 25 to 44, 35.9% aged 45 to 64, and 20.6% who were 65years of age or older. The median age was 49.8years. For every 100 females, there were 103.7 males, and for every 100 females age 18 and over there were 106.9 males age 18 and over.
The census reported that 95.1% of the population lived in households, 4.9% lived in non-institutionalized group quarters, and no one was institutionalized. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas.
There were 424 households, out of which 32.1% included children under the age of 18, 77.1% were married-couple households, 1.9% were cohabiting couple households, 13.2% had a female householder with no spouse or partner present, and 7.8% had a male householder with no spouse or partner present. 13.0% of households were one person, and 7.1% were one person aged 65 or older. The average household size was 2.81. There were 362 families (85.4% of all households).
See also
- Mount Diablo