| Place Name | Riga |
| Place Type | Unincorporated |
| ZIP Code(s) | 49276 |
| County | Lenawee County |
| Area Code(s) | 517 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | Adrian, MI |
| US Congressional District(s) | Michigan 5th |
| State House Districts | 34 |
| State Senate Districts | 16 |