| Place Name | Merrill |
| Place Type | City |
| ZIP Code(s) | 51038 |
| County | Plymouth County |
| Area Code(s) | 712 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 758 |
| Population Growth Rate (2010-19) | -5.03% |
| Majority Ethnicity | White 93.9% |
| US Congressional District(s) | Iowa 4th |
| State House Districts | 5 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.9% |
| African American | 1.22% |
| Hispanic | 0% |
| Asian | 0.31% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.58% |