Cities and Towns in Lewis and Clark County, Montana
Founded in February 2, 1865, Lewis and Clark County is one of 56 counties in the state of Montana. Historically, Lewis and Clark County was one of the 9 original counties. The city of Helena is the county seat. With FIPS code of 49, Lewis and Clark County has a population of 72,223 and area of 3,461 square miles (8,964 km²).
List of all cities in Lewis and Clark County, MT alphabetically
| City/Town | Postal Code | Area Code |
| Augusta, MT | 59410 | 406 |
| Canyon Creek, MT | 59633 | 406 |
| Carroll College, MT | 59625 | 406 |
| City County Building, MT | 59623 | 406 |
| Craig, MT | 59648 | 406 |
| East Helena, MT | 59635 | 406 |
| Fort Harrison, MT | 59636 | 406 |
| Helena, MT | 59601 | 406 |
| 59602 | 406 | |
| 59604 | 406 | |
| 59620 | 406 | |
| 59623 | 406 | |
| 59624 | 406 | |
| 59625 | 406 | |
| 59626 | 406 | |
| Lincoln, MT | 59639 | 406 |
| Marysville, MT | 59640 | 406 |
| State of Montana, MT | 59620 | 406 |
| Wolf Creek, MT | 59648 | 406 |
