| Place Name | Willis |
| Place Type | Unincorporated |
| ZIP Code(s) | 48191 |
| County | Washtenaw County |
| Area Code(s) | 734 |
| Timezone | Eastern Daylight Time (EDT) |
| Population () | |
| Metro/Micro Stats Area | Ann Arbor, MI |
| US Congressional District(s) | Michigan 6th |
| State House Districts | 31 |
| State Senate Districts | 15 |