| Place Name | Penngrove |
| Place Type | Census Designated Place |
| ZIP Code(s) | 94951 |
| County | Sonoma County |
| Area Code(s) | 707 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 2,778 |
| Population Growth Rate (2010-19) | 4.56% |
| Majority Ethnicity | White 71.81% |
| Metro/Micro Stats Area | Santa Rosa-Petaluma, CA |
| US Congressional District(s) | California 5th |
| State Assembly Districts | 10 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 71.81% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 5.75% |
| Native American | 2.37% |
| Hawaiin/Pacific Islander | 20.08% |