| Place Name | Waterloo |
| Place Type | Town |
| ZIP Code(s) | 97355 |
| County | Linn County |
| Area Code(s) | 458,541 |
| Timezone | Pacific Standard Time (PST) |
| Population (2022) | 320 |
| Population Growth Rate (2010-19) | -3.06% |
| Majority Ethnicity | White 97.66% |
| Metro/Micro Stats Area | Albany-Lebanon, OR |
| US Congressional District(s) | Oregon 4th |
| State House Districts | 17 |
| State Senate Districts | 9 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.66% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.34% |