| Place Name | Parnell |
| Place Type | City |
| ZIP Code(s) | 64475 |
| County | Nodaway County |
| Area Code(s) | 660 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 129 |
| Population Growth Rate (2010-19) | -29.32% |
| Majority Ethnicity | White 91.11% |
| Metro/Micro Stats Area | Maryville, MO |
| US Congressional District(s) | Missouri 6th |
| State House Districts | 1 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 91.11% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.56% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.33% |