Petroleum County Montana is covered by a total of 4 ZIP Codes. There are 2 ZIP Codes in Petroleum County that extend into adjacent counties (Fergus County, and Phillips County). Of the ZIP codes within or partially within Petroleum County there are 4 Standard 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 Petroleum 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 | |||
|---|---|---|---|---|---|
| Grass Range | Standard | |||
| Teigen | Standard | |||
| Winnett | Standard | |||
| Roy | Standard |