| Place Name | Martinez |
| Place Type | City |
| ZIP Code(s) | 94553 |
| County | Contra Costa County |
| Area Code(s) | 925 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 36,054 |
| Population Growth Rate (2010-19) | 4.08% |
| Majority Ethnicity | White 67.42% |
| Metro/Micro Stats Area | San Francisco-Oakland-Berkeley, CA |
| US Congressional District(s) | California 5thCalifornia 11th |
| State Assembly Districts | 14 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 67.42% |
| African American | 3.25% |
| Hispanic | 0.81% |
| Asian | 9.98% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 18.55% |