| Place | Type | AsNotedIn |
|---|---|---|
| Boulder | Place |
|
| Corbin (Ghost Town) | Ghost Town |
|
| East Helena | Place |
|
| Elkhorn | Place |
|
| Lewis and Clark Caverns State Park | Place | |
| Montana City | Place |
|
| Wickes (Ghost Town) | Ghost Town |
|
| Particulars for Jefferson County: | |
|---|---|
| Locale Type | US County |
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