| City : | Roundup City |
| County : | Musselshell County, St. Johns County |
| State : | Montana (MT) |
| | |
| Land Area : | 1.34 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 46.4483346 |
| Longitude : | -108.5396872 |
| | |
| Population (2010): | 1,788 |
| Population Estimate (2012) : | 1,825 |
| Population Density : | 1,336.72/sq mi |
| Housing Units (2012) : | 973 |
| Median Household Income (2012) : | $36,343 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $58,472 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $90,700 (Montana : $183,000, USA : $181,400) |