Jefferson County, Montana ZIP codes
6ZIP codes
6Cities and towns
13,276People in ZIP areas
406Area code
Jefferson County is in Montana and the Mountain Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.
All ZIP codes in Jefferson County
| ZIP code | City | Type | Population | Median income |
|---|---|---|---|---|
| 59631 | Basin | PO Box only | 375 | – |
| 59632 | Boulder | Standard | 2,557 | $68,750 |
| 59634 | Clancy | Standard | 5,521 | $129,891 |
| 59638 | Jefferson City | PO Box only | 769 | $126,723 |
| 59721 | Cardwell | Standard | 423 | $94,167 |
| 59759 | Whitehall | Standard | 3,631 | $60,571 |
Cities and towns in Jefferson County
Area codes in Jefferson County
Questions
- How many ZIP codes are in Jefferson County, MT?
- Jefferson County has 6 ZIP codes, 4 of them standard ZIP codes for street addresses.
- What cities are in Jefferson County?
- Jefferson County ZIP codes cover Basin, Boulder, Cardwell, Clancy, Jefferson City and Whitehall.
- What area code is Jefferson County, MT?
- Jefferson County uses area code 406.
- What time zone is Jefferson County in?
- Jefferson County is in Mountain Time.
Other Montana counties
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