List of counties in Montana

This is a list of the counties in the U.S. state of Montana. There are 56 counties in the state.

Montana has two consolidated city-counties&mdash;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 1978, when part of it was nominally added to Gallatin County, and the rest of it to Park County.

Montana's postal abbreviation is MT and its FIPS state code is 30.

Counties
The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify counties, is provided for each county. The FIPS code for each county links to census data for that county.


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Previous counties

 * St. Charles County, Missouri Territory created October 1, 1812, moved 1813
 * Vancouver County, Oregon Territory created August 13, 1848, renamed Clarke County, Oregon Territory September 3, 1849
 * Clarke County, Washington Territory created March 2, 1853
 * Walla Walla County, Washington Territory April 25, 1854
 * Spokane County, Washington Territory created January 29, 1858, abolished January 19, 1864
 * Missoula County, Washington Territory created December 14, 1860, abolished May 26, 1864
 * Shoshone County, Washington Territory created January 9, 1861, abolished March 3, 1863
 * Stevens County, Washington Territory created January 20, 1863
 * Shoshone County, Idaho Territory created February 4, 1864

Extinct counties

 * Edgerton County, Montana Territory created February 2, 1865, renamed Lewis and Clark County, Montana Territory March 1, 1868.
 * Big Horn County, Montana Territory created February 2, 1865, renamed Custer County, Montana Territory February 16, 1877.

County equivalents

 * Yellowstone National Park (Montana Territory) created March 1, 1872, divided between Park County, Montana and Gallatin County, Montana in 1978.