| City : | Big Arm |
| County : | Deschutes County, Lake County, Pottawatomie County |
| State : | Montana (MT) |
| | |
| Land Area : | 5.42 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 47.7936085 |
| Longitude : | -114.2700304 |
| | |
| Population (2010): | 177 |
| Population Estimate (2012) : | 287 |
| Population Density : | 32.66/sq mi |
| Housing Units (2012) : | 167 |
| Median Household Income (2012) : | $53,333 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $54,583 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $174,600 (Montana : $183,000, USA : $181,400) |