| Place Name | Waterloo |
| Place Type | Census Designated Place |
| ZIP Code(s) | 95212 95215 |
| County | San Joaquin County |
| Area Code(s) | 209 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 251 |
| Population Growth Rate (2010-19) | -6.64% |
| Majority Ethnicity | White 72.71% |
| Metro/Micro Stats Area | Stockton, CA |
| US Congressional District(s) | California 9th |
| State Assembly Districts | 12 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 72.71% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.02% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 26.27% |