Lewis and Clark County Montana is covered by a total of 17 ZIP Codes. There are 5 ZIP Codes in Lewis and Clark County that extend into adjacent counties (Broadwater County, Cascade County, Jefferson County, Powell County, and Teton County). Of the ZIP codes within or partially within Lewis and Clark County there are 10 Standard ZIP Codes, 2 Unique ZIP Codes and 5 PO Box ZIP Codes.
Click on the ZIP Codes in the interactive map to view more information. The map control in the upper right corner can be used to toggle map layers on and off. The red outline is the border of Lewis and Clark County and can be turned on and off. Each type of postal code can also be turned on and off.
| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Augusta | PO Box | |||
| Cascade | Standard | |||
| Helena | Standard | |||
| Helena | Standard | |||
| Helena | PO Box | |||
| Helena | PO Box | |||
| Helena | Unique | |||
| Helena | PO Box | |||
| Helena | Unique | |||
| Helena | Standard | |||
| Canyon Creek | Standard | |||
| East Helena | Standard | |||
| Fort Harrison | PO Box | |||
| Lincoln | Standard | |||
| Marysville | Standard | |||
| Wolf Creek | Standard | |||
| Ovando | Standard |