| Place Name | Hartley |
| Place Type | Census Designated Place |
| ZIP Code(s) | 95688 |
| County | Solano County |
| Area Code(s) | 707 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 2,573 |
| Population Growth Rate (2010-19) | -3.19% |
| Majority Ethnicity | White 67.52% |
| Metro/Micro Stats Area | Vallejo, CA |
| US Congressional District(s) | California 3rd |
| State Assembly Districts | 4 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 67.52% |
| African American | 11.89% |
| Hispanic | 0% |
| Asian | 4.4% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 16.19% |