| County : | Lewis And Clark County |
| State : | Montana (MT) |
| Land Area : | 3,458.81 sq mi |
| Water Area : | 38.89 sq mi |
| Latitude : | 47.1221333 |
| Longitude : | -112.3829537 |
| Population (2010): | 63,395 |
| Population Estimate (2012) : | 63,432 |
| Population Density : | 18.33/sq mi |
| Housing Units (2012) : | 30,180 |
| Median Household Income (2012) : | $54,535 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $69,944 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $200,600 (Montana : $183,000, USA : $181,400) |
Lewis And Clark County Cities / Towns
| Augusta (309) | Craig (43) | East Helena City (1,984) |
| Helena City (28,190) | Helena Valley Northeast (2,995) | Helena Valley Northwest (3,482) |
| Helena Valley Southeast (8,227) | Helena Valley West Central (7,883) | Helena West Side (1,637) |
| Lincoln (1,013) | Marysville (80) |
Lewis And Clark County Zip Codes
| 59410 (666) | 59421 (1,831) | 59601 (29,283) |
| 59602 (24,285) | 59633 (206) | 59635 (7,282) |
| 59636 (12) | 59639 (1,286) | 59640 (89) |
| 59648 (635) |