| Place Name | Middle River |
| Place Type | City |
| ZIP Code(s) | 56737 |
| County | Marshall County |
| Area Code(s) | 218 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 340 |
| Population Growth Rate (2010-19) | 0.33% |
| Majority Ethnicity | White 99.21% |
| US Congressional District(s) | Minnesota 7th |
| State House Districts | 01A |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.21% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.79% |