CDP in Contra Costa County, California · 1.4 sq mi · 771 people per sq mi
About 1,100 people live in Diablo. The typical household earns $248,150, and the median resident is 43.3 years old.
2026 projection
From 834 in 2020
Poverty rate 13.23%
Men 43.8 · Women 40.8
2011–2026
1,052
2026 projection
26.1% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2011–2026
1,052
2026 projection
26.1% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 1,052 | -7 | 0.66% |
|---|---|---|---|
| 2025 | 1,059 | -13 | 0.61% |
| 2023 | 1,072 | +300 | 38.86% |
| 2022 | 772 | +83 | 12.05% |
| 2021 | 689 | -145 | 17.39% |
| 2020 | 834 | +386 | 86.16% |
| 2019 | 448 | +84 | 23.08% |
| 2018 | 364 | -254 | 41.10% |
| 2017 | 618 | -189 | 23.42% |
| 2016 | 807 | -11 | 1.34% |
Showing 10 of 15 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 12 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 8 residents
77% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 77% | 88% | 68% |
| Never married | 12% | 12% | 12% |
| Divorced | 0% | 0% | 0% |
| Widowed | 7% | 0% | 13% |
| Separated | 4% | 0% | 7% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau