| Place Name | Monroe |
| Place Type | City |
| ZIP Code(s) | 97456 |
| County | Benton County |
| Area Code(s) | 458,541 |
| Timezone | Pacific Daylight Time (PDT) |
| Population (2022) | 635 |
| Population Growth Rate (2010-19) | 4.86% |
| Majority Ethnicity | White 67.68% |
| Metro/Micro Stats Area | Corvallis, OR |
| US Congressional District(s) | Oregon 4th |
| State House Districts | 23 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 67.68% |
| African American | 0% |
| Hispanic | 0.35% |
| Asian | 1.76% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 30.21% |