Comparison to Surrounding Areas
The median household income ($207,500) for 94528 is less than the median household income for 94506 ($250,001), 94507 ($250,001), 94526 ($225,097), and Diablo CDP ($248,150). But it's more than Contra Costa County ($127,229).
| 94528 | $207,500 |
| Diablo CDP | $248,150 |
| Contra Costa County | $127,229 |
Get Median Household Income for all Zip Codes in California.
The average household income ($325,963) for 94528 is less than the average household income for 94506 ($344,303), 94507 ($402,056), and Diablo CDP ($341,195). But it's more than 94526 ($293,443) and Contra Costa County ($174,872).
| 94528 | $325,963 |
| Diablo CDP | $341,195 |
| Contra Costa County | $174,872 |
Get Average Household Income for all Zip Codes in California.
The per-capita income for 94528 is $127,901. The per capita income ($127,901) for 94528 is less than the per capita income for 94507 ($141,743). But it's more than 94506 ($117,571), 94526 ($107,752), Contra Costa County ($62,927), and Diablo CDP ($127,494).
| 94528 | $127,901 |
| Diablo CDP | $127,494 |
| Contra Costa County | $62,927 |
Get Per-Capita Income for all Zip Codes in California.
50% of households make over $200,000 a year. The percent high income households (50.0%) for 94528 is less than the percent high income households for 94506 (60.4%), 94507 (66.9%), 94526 (55.3%), and Diablo CDP (51.5%). But it's more than Contra Costa County (29.4%).
| 94528 | 50.0% |
| Diablo CDP | 51.5% |
| Contra Costa County | 29.4% |
Get High Income Households for all Zip Codes in California.
| under 25 years | 25 to 44 years | 45 to 64 years | 65 years and over | |
|---|---|---|---|---|
| 94528 | $-1 | $250,001 | $-1 | $250,001 |
| Diablo CDP | $-1 | $250,001 | $-1 | $250,001 |
| Contra Costa County | $58,855 | $142,683 | $152,482 | $90,014 |
Get Median Household Income by Age of Householder for all Zip Codes in California.
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All income statistics above are the most current, comparable income statistics available from the US Census Bureau and are from the American Community Survey 2024 5-year estimates. You can find this information and other demographics for 94528 on the US Census Bureau’s website. These values are in 2024 inflation-adjusted dollars and were downloaded on 29 January 2026.
Margins of error for the income data are:
| Median Household Income | Average Household Income | Per Capita Income | High Income Households | Median Household Income by Age of Householder | ||||
|---|---|---|---|---|---|---|---|---|
| under 25 | 25 to 44 | 45 to 64 | 65+ | |||||
| 94528 | +/-$151,231 | +/-$167,197 | +/-$58,629 | +/-23.5% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| Diablo CDP | +/-$178,127 | +/-$161,283 | +/-$49,790 | +/-22.7% | +/-$-1 | +/-$-1 | +/-$-1 | +/-$-1 |
| Contra Costa County | +/-$1,713 | +/-$2,032 | +/-$732 | +/-0.5% | +/-$11,140 | +/-$4,027 | +/-$3,958 | +/-$2,372 |