| Place Name | Elkhorn |
| Place Type | Census Designated Place |
| ZIP Code(s) | 59632 |
| County | Jefferson County |
| Area Code(s) | 406 |
| Timezone | Mountain Standard Time (MST) |
| Population (2022) | 19 |
| Population Growth Rate (2010-19) | 20.00% |
| Metro/Micro Stats Area | Helena, MT |
| US Congressional District(s) | Montana At-Large |
| State House Districts | 75 |
| State Senate Districts | 38 |