| City : | Garrison |
| County : | Harper County, Plymouth County, Powell County |
| State : | Montana (MT) |
| | |
| Land Area : | 9.63 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 46.5401928 |
| Longitude : | -112.8167576 |
| | |
| Population (2010): | 96 |
| Population Estimate (2012) : | 134 |
| Population Density : | 9.96/sq mi |
| Housing Units (2012) : | 61 |
| Median Household Income (2012) : | $32,500 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $45,625 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $133,300 (Montana : $183,000, USA : $181,400) |