| ZIP Code | 94528 |
| ZIP Code Name | Diablo |
| Primary County | Contra Costa County |
| ZIP Code Type | PO Box |
| Population (2021) | 655 |
| Area Code(s) | 925 |
| Current Time | PST |
94528 is a United States ZIP Code located in Diablo California. Portions of 94528 are also in Danville and Alamo. 94528 is entirely within Contra Costa County. 94528 is within the Metro Bay Area.
The majority race/ethnicity residing in 94528 is White. The current unemployment level in 94528 is 3.1%.| Population | 655 |
| Population Growth Rate | 18.66% |
| Population Density | 798 People per Square Mile |
| Total Households | 350 |
| Percentage High Income Households | 58.0% |
| Current Unemployment Rate (November 2023) | 3.1% |
| Majority Race/Ethnicty | White - 96.35% |
| Race/Ethnicty | Total | Percentage |
|---|---|---|
| White | 608 | 96.35% |
| Black | 0 | 0% |
| Hispanic | 0 | 0% |
| Asian | 23 | 3.65% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 0 | 0% |
| Bachelor Degree | 321 | 42.52% |
| High School Diploma | 66 | 8.74% |
| No High School Diploma | 0 | 0% |
| GED or Alternate | 0 | 0% |
| 1 or More Years of College | 64 | 8.48% |
| Associates Degree | 48 | 6.36% |
| Masters Degree | 168 | 22.25% |
| Professional Degree | 48 | 6.36% |
| Doctorate Degree | 37 | 4.9% |
| Coordinates | 37.84070587,-121.95989227 |
| Adjacent ZIP Codes | |
| Cities/Towns in 94528 | |
| Region | Metro Bay Area |
| Metropolitan/Micropolitan Stat Area | San Francisco-Oakland-Berkeley, CA |
| Time Zone | Pacific Standard Time |
| IANA Timezone | America/Los_Angeles |
| Area | 0.82107895 Square Miles |
| US Congressional Districts in 94528 | |
| California State Senate Districts in 94528 | |
| California State Assembly Districts in 94528 |
| School Districts in 94528 | |
| Elementary Schools in 94528 | |
| Middle Schools in 94528 | |
| High Schools in 94528 |
| Plant Hardiness Zone | Zone 9b: 25F to 30F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | December 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | March 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Csb - Warm-Summer Mediterranean Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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