| Place Name | Union Pier |
| Place Type | Unincorporated |
| ZIP Code(s) | 49129 |
| County | Berrien County |
| Area Code(s) | 269 |
| Timezone | Eastern Daylight Time (EDT) |
| Population () | |
| Metro/Micro Stats Area | Niles, MI |
| US Congressional District(s) | Michigan 5th |
| State House Districts | 38 |
| State Senate Districts | 17 |