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Lewis and Clark County Area Codes

About Lewis and Clark County Area Codes

The county of Lewis and Clark County, located in Montana, is served by 1 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in Lewis and Clark County include 406. The county mainly follows the America/Denver time zone.

Cities and towns served by these area codes in Lewis and Clark County include Helena.

List of Area Codes in Lewis and Clark County, Montana

The table below lists all telephone area codes used in Lewis and Clark County, Montana, along with their associated cities and time zones from this dataset.


S.N. Area Code Cities Time Zone(s)
1 406 Helena America/Denver


Related Area Code Pages

Explore related area code resources on Burning Compass:

  • All area codes in Montana
  • Individual area code details are available from the table above.

County Area Codes in Montana

  1. Cascade County Area Codes
  2. Gallatin County Area Codes
  3. Lewis and Clark County Area Codes
  4. Missoula County Area Codes
  5. Silver Bow County Area Codes
  6. Yellowstone County Area Codes

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