Lewis and Clark County, Montana
Lewis and Clark County is a county in Montana. Its county FIPS code is 30049. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 30049
- Representative coordinates
- 47.122105, -112.382890
- County type
- County
- County seat or government
- Helena
- Resident population, July 2025
- 75,331
- Land area
- 8,957.164 km²
- Water area
- 101.497 km²
- State
- Montana
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Lewis and Clark County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
59410 · 59421 · 59601 · 59602 · 59623 · 59625 · 59633 · 59635 · 59636 · 59639 · 59640 · 59648
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Lewis and Clark County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Augusta CDP, MT
- Canyon Creek CDP, MT
- Craig CDP, MT
- East Helena city, MT
- Gilman CDP, MT
- Helena city, MT
- Helena Valley Northeast CDP, MT
- Helena Valley Northwest CDP, MT
- Helena Valley Southeast CDP, MT
- Helena Valley West Central CDP, MT
- Helena West Side CDP, MT
- Lincoln CDP, MT
- Marysville CDP, MT
- Milford Colony CDP, MT
- Rimini CDP, MT
- Unionville CDP, MT
- Wolf Creek CDP, MT
- York CDP, MT
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.