All Countries
Diablo, CA
Full City Profile · California · Contra Costa County County
3.0
/5.0
B
Good
1,072
Population
788/sq mi density
$2,000,001
Home Value
$3,072,481 Zillow
58°F
Avg Temperature
323 sunny days/yr
39
Violent Crime/100K
1,005 property/100K
B
Overall
3.0 / 5.0
Good overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
39 violent crimes/100K
A+
Education
5.0 / 5.0
84.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-9.4%
1,183 → 1,072
over 10 years
Annual Pop. Growth
-0.98%
Compound annual growth rate
Population Over Time
Total population for Diablo across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
1,001
-71 from 2023 (1,072)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 1,183 | — | $224,036 | — |
| 2015 | 818 | -30.9% | $199,926 | -10.8% |
| 2017 | 618 | -24.4% | $137,623 | -31.2% |
| 2019 | 448 | -27.5% | $143,616 | +4.4% |
| 2021 | 689 | +53.8% | — | — |
| 2023 | 1,072 | +55.6% | — | — |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.