| Place Name | Grassland Colony |
| Place Type | Census Designated Place |
| ZIP Code(s) | 57481 |
| County | Mcpherson County |
| Area Code(s) | 605 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 0 |
| US Congressional District(s) | South Dakota At-Large |
| State House Districts | 23 |
| State Senate Districts | 23 |