| City : | Jefferson City |
| County : | Cimarron County, Honolulu County, Jefferson County, Marion County, Norton County, Roscommon County |
| State : | Montana (MT) |
| | |
| Land Area : | 23.22 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 46.3779462 |
| Longitude : | -112.0304853 |
| | |
| Population (2010): | 472 |
| Population Estimate (2012) : | 488 |
| Population Density : | 20.33/sq mi |
| Housing Units (2012) : | 220 |
| Median Household Income (2012) : | $48,309 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $80,417 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $255,100 (Montana : $183,000, USA : $181,400) |