List of 56 counties in the U.S. state of Montana. Montana has two consolidated city-counties—Anaconda with Deer Lodge County and Butte with Silver Bow County. The portion of Yellowstone National Park that lies within Montana was not part of any county until 1997, when part of it was nominally added to Gallatin County, and the rest of it to Park County.
The links in the column FIPS County Code are to the Census Bureau Info page for that county.
|003||Big Horn County|
Defunct County[edit | edit source]
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