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List of counties in Montana

From Wikipedia, the free encyclopedia

Counties of Montana
LocationState of Montana
Number56
Populations525 (Petroleum) – 171,583 (Yellowstone)
Areas718 square miles (1,860 km2) (Silver Bow) – 5,543 square miles (14,360 km2) (Beaverhead)
Government
Subdivisions

This is alist of thecounties in theU.S. state ofMontana. There are 56 counties in the state.

Montana has two consolidated city-counties—Anaconda withDeer Lodge County andButte withSilver Bow County. The portion ofYellowstone National Park that lies within Montana was not part of any county until 1978, when part of it was nominally added toGallatin County, and the rest of it toPark County.

Montana'spostal abbreviation isMT and itsFIPS state code is30.

Counties

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TheFederal 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 tocensus data for that county.

County
FIPS code[1] County seat[2] Est.[2] Origin EtymologyLicense plate prefix
[3][4]		Population[5]AreaMap
Beaverhead County001DillonFeb 2, 1865Original CountyBeaverhead Rock in theJefferson River, which is shaped like abeaver's head.[6]1810,0065,543 sq mi
(14,356 km2)		State map highlighting Beaverhead County
Big Horn County003HardinJan 13, 1913Rosebud County,Yellowstone CountyBighorn sheep in the area.[7][8]2212,7964,995 sq mi
(12,937 km2)		State map highlighting Big Horn County
Blaine County005ChinookFeb 29, 1912Chouteau CountyJames G. Blaine (1830–1893),United States Secretary of State and presidential candidate.[9]246,9034,226 sq mi
(10,945 km2)		State map highlighting Blaine County
Broadwater County007TownsendFeb 9, 1897Jefferson County,Meagher CountyCharles A. Broadwater (1840–1892), a pioneer in the area and colonel in theUnited States Army.[10]438,3021,192 sq mi
(3,087 km2)		State map highlighting Broadwater County
Carbon County009Red LodgeMar 4, 1895Park County,Yellowstone CountyCoal deposits in the area.[8]1011,4982,048 sq mi
(5,304 km2)		State map highlighting Carbon County
Carter County011EkalakaFeb 22, 1917Fallon CountyThomas Henry Carter (1854–1911), aU.S. Senator fromMontana.[11]421,3993,340 sq mi
(8,651 km2)		State map highlighting Carter County
Cascade County013Great FallsSep 12, 1887Chouteau County,Meagher CountyGreat Falls of theMissouri River.284,5232,698 sq mi
(6,988 km2)		State map highlighting Cascade County
Chouteau County015Fort BentonFeb 2, 1865Original CountyJean Pierre Chouteau (1758–1849) and his sonPierre Chouteau, Jr. (1789–1865). They were part of theChouteau fur-trading family.195,8803,973 sq mi
(10,290 km2)		State map highlighting Chouteau County
Custer County017Miles CityFeb 2, 1865Original CountyOriginallyBig Horn County,[12] renamed February 16, 1877 forGeorge Armstrong Custer1411,9643,783 sq mi
(9,798 km2)		State map highlighting Custer County
Daniels County019ScobeyAug 30, 1920Sheridan County,Valley CountyMansfield A. Daniels (1858 - 1919), an early rancher and storekeeper371,6251,426 sq mi
(3,693 km2)		State map highlighting Daniels County
Dawson County021GlendiveJan 15, 1869Unorganized landsAndrew Dawson, atrapping official and major in theUnited States Army168,7312,373 sq mi
(6,146 km2)		State map highlighting Dawson County
Deer Lodge County023AnacondaFeb 2, 1865Original CountyDeer Lodge Valley, which in turn was either named for the Native American name "Lodge of the White-tailed Deer" or a salt lick wheredeer came in droves309,811737 sq mi
(1,909 km2)		State map highlighting Deer Lodge County
Fallon County025BakerDec 9, 1913Custer CountyBenjamin O'Fallon, a FederalNative American agent392,9461,620 sq mi
(4,196 km2)		State map highlighting Fallon County
Fergus County027LewistownMar 12, 1885Chouteau County,Meagher CountyAndrew Fergus (1850 - 1928), one of the first settlers in the county811,8624,339 sq mi
(11,238 km2)		State map highlighting Fergus County
Flathead County029KalispellFeb 6, 1893Missoula CountyFlatheadNative Americans7114,5275,099 sq mi
(13,206 km2)		State map highlighting Flathead County
Gallatin County031BozemanFeb 2, 1865Original CountyAlbert Gallatin (1761–1849), theUnited States Secretary of the Treasury at the time of theLewis and Clark Expedition6126,9842,507 sq mi
(6,493 km2)		State map highlighting Gallatin County
Garfield County033JordanFeb 7, 1919Dawson CountyJames A. Garfield (1831–1881), the twentiethPresident of the United States501,1814,668 sq mi
(12,090 km2)		State map highlighting Garfield County
Glacier County035Cut BankFeb 17, 1919Teton CountyGlacier National Park, which borders the county3813,5032,995 sq mi
(7,757 km2)		State map highlighting Glacier County
Golden Valley County037RyegateOct 4, 1920Musselshell County,Sweet Grass CountyProbably named in a promotional attempt to lure settlers to the area538631,175 sq mi
(3,043 km2)		State map highlighting Golden Valley County
Granite County039PhilipsburgMar 2, 1893Deer Lodge County,Missoula CountyNamed for the granite rock which is common in the area's mountains and also held the area's richgold andsilver ore; the old mining town ofGranite shared the name.[13]463,6021,728 sq mi
(4,475 km2)		State map highlighting Granite County
Hill County041HavreFeb 22, 1912Chouteau CountyJames J. Hill (1838–1916), a leadingrailroad tycoon1216,0652,896 sq mi
(7,501 km2)		State map highlighting Hill County
Jefferson County043BoulderFeb 2, 1865Original CountyThomas Jefferson (1743–1826), the thirdPresident of the United States5113,3041,657 sq mi
(4,292 km2)		State map highlighting Jefferson County
Judith Basin County045StanfordDec 10, 1920Cascade County,Fergus CountyTheJudith River which was in turn named byWilliam Clark for Julia "Judith" Hancock, whom he would later marry362,1111,870 sq mi
(4,843 km2)		State map highlighting Judith Basin County
Lake County047PolsonMay 11, 1923Flathead County,Missoula CountyFlathead Lake1533,4031,494 sq mi
(3,869 km2)		State map highlighting Lake County
Lewis and Clark County049HelenaFeb 2, 1865Original CountyOriginallyEdgerton County), renamed March 1, 1868 forMeriwether Lewis andWilliam Clark575,1293,461 sq mi
(8,964 km2)		State map highlighting Lewis and Clark County
Liberty County051ChesterFeb 11, 1920Chouteau County,Hill CountyThe sentiment of the inhabitants when the county was formed soon afterWorld War I481,9341,430 sq mi
(3,704 km2)		State map highlighting Liberty County
Lincoln County053LibbyMar 9, 1909Flathead CountyAbraham Lincoln (1809–1865), the 16thPresident of the United States5622,1843,613 sq mi
(9,358 km2)		State map highlighting Lincoln County
Madison County057Virginia CityFeb 2, 1865Original CountyJames Madison (1751–1836), the fourthPresident of the United States and theSecretary of State at the time of theLewis and Clark Expedition259,7533,587 sq mi
(9,290 km2)		State map highlighting Madison County
McCone County055CircleFeb 20, 1919Dawson County,Richland CountyGeorge McCone (1853 - 1929), aMontana statesenator who helped create the county411,7172,643 sq mi
(6,845 km2)		State map highlighting McCone County
Meagher County059White Sulphur SpringsNov 16, 1867Chouteau County,Gallatin CountyThomas Francis Meagher (1823–1867), anacting Governor of theMontana Territory472,0652,392 sq mi
(6,195 km2)		State map highlighting Meagher County
Mineral County061SuperiorAug 7, 1914Missoula CountyManymines and mining prospects within the county545,1951,220 sq mi
(3,160 km2)		State map highlighting Mineral County
Missoula County063MissoulaFeb 2, 1865Original CountySupposedly a contraction of theFlathead word, "im-i-sul-e-etiku", meaning "by or near the place of fear or ambush", a reference to Hell Gate Canyon, in which FlatheadNative Americans were sometimes attacked byBlackfeet4122,5462,598 sq mi
(6,729 km2)		State map highlighting Missoula County
Musselshell County065RoundupFeb 11, 1911Fergus County,Meagher County,Yellowstone CountyTheMusselshell River, named in turn by theLewis and Clark Expedition presumably due tomussels found on its banks235,4521,867 sq mi
(4,836 km2)		State map highlighting Musselshell County
Park County067LivingstonFeb 23, 1887Gallatin CountyNearbyYellowstone National Park4918,0742,656 sq mi
(6,879 km2)		State map highlighting Park County
Petroleum County069WinnettNov 24, 1924Fergus CountyThe production ofpetroleum atCat Creek555251,654 sq mi
(4,284 km2)		State map highlighting Petroleum County
Phillips County071MaltaFeb 5, 1915Blaine County,Valley CountyBenjamin D. Phillips (1857 - 1926), a leading rancher and early pioneer in the county114,2145,140 sq mi
(13,313 km2)		State map highlighting Phillips County
Pondera County073ConradFeb 17, 1919Chouteau County,Teton CountyOriginallypend d'oreille,French words meaning "ear pendant"; the name was changed to a form resembling the phonetic spelling to avoid confusion with the lake and town of the same name in Idaho and of a county in Washington.266,0781,625 sq mi
(4,209 km2)		State map highlighting Pondera County
Powder River County075BroadusMar 7, 1919Custer CountyThePowder River, named in turn for thegunpowder-like sand on its shores91,7343,297 sq mi
(8,539 km2)		State map highlighting Powder River County
Powell County077Deer LodgeJan 31, 1901Deer Lodge CountyMount Powell, which in turn was named forJohn Wesley Powell (1834–1902), the early environmentalist andexplorer287,1202,326 sq mi
(6,024 km2)		State map highlighting Powell County
Prairie County079TerryFeb 5, 1915Dawson County,Fallon CountyThe county's location on theGreat Plains451,1121,737 sq mi
(4,499 km2)		State map highlighting Prairie County
Ravalli County081HamiltonFeb 16, 1893Missoula CountyAnthony Ravalli (1812–1884), a Jesuit missionary who came to the area in 18451348,1872,394 sq mi
(6,200 km2)		State map highlighting Ravalli County
Richland County083SidneyMay 27, 1914Dawson CountyNamed so as to depict fertile soil, in an attempt to lure in settlers2711,0282,084 sq mi
(5,398 km2)		State map highlighting Richland County
Roosevelt County085Wolf PointFeb 18, 1919Sheridan CountyTheodore Roosevelt (1858–1919), the 26thPresident of the United States1710,1972,356 sq mi
(6,102 km2)		State map highlighting Roosevelt County
Rosebud County087ForsythFeb 11, 1901Custer CountyTheRosebud River, which was named for the manywild roses along its banks298,1945,012 sq mi
(12,981 km2)		State map highlighting Rosebud County
Sanders County089Thompson FallsFeb 7, 1905Missoula CountyWilbur Fiske Sanders (1834–1905), a pioneer, vigilante, andU.S. Senator fromMontana3513,8952,762 sq mi
(7,154 km2)		State map highlighting Sanders County
Sheridan County091PlentywoodMar 24, 1913Valley CountyPhilip Sheridan (1831–1888),Civil War general343,4481,677 sq mi
(4,343 km2)		State map highlighting Sheridan County
Silver Bow County093ButteFeb 16, 1881Deer Lodge CountySilver Bow Creek; there are multiple theories explaining how the creek was named136,134718 sq mi
(1,860 km2)		State map highlighting Silver Bow County
Stillwater County095ColumbusMar 24, 1913Carbon County,Sweet Grass County,Yellowstone CountyStillwater River, ironically named for its very fast current329,4501,795 sq mi
(4,649 km2)		State map highlighting Stillwater County
Sweet Grass County097Big TimberMar 5, 1895Meagher County,Park County,Yellowstone CountyThe abundantsweet grass in the county403,7571,855 sq mi
(4,804 km2)		State map highlighting Sweet Grass County
Teton County099ChoteauFeb 7, 1893Chouteau CountyThe Teton Range which is in turn named for the French word for 'nipple',teton316,4442,273 sq mi
(5,887 km2)		State map highlighting Teton County
Toole County101ShelbyMay 7, 1914Hill County,Teton CountyJoseph Toole (1851–1929), the first and fourthGovernor of Montana215,1531,911 sq mi
(4,949 km2)		State map highlighting Toole County
Treasure County103HyshamFeb 7, 1919Rosebud CountyNamed promotionally to attract new settlers33739979 sq mi
(2,536 km2)		State map highlighting Treasure County
Valley County105GlasgowFeb 6, 1893Dawson CountyMuch of the county lies within the valley of theMilk River207,4344,921 sq mi
(12,745 km2)		State map highlighting Valley County
Wheatland County107HarlowtonFeb 22, 1917Meagher County,Sweet Grass CountyThe manywheat fields in the county442,0581,423 sq mi
(3,686 km2)		State map highlighting Wheatland County
Wibaux County109WibauxAug 17, 1914Dawson County,Fallon County,Richland CountyPierre Wibaux (1858–1913), a pioneer and cattleman52911889 sq mi
(2,302 km2)		State map highlighting Wibaux County
Yellowstone County111BillingsFeb 26, 1883Custer CountyTheYellowstone River, named in turn for the yellow rocks found along its shores3171,5832,635 sq mi
(6,825 km2)		State map highlighting Yellowstone County

Previous counties

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Extinct counties

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County equivalents

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See also

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References

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  1. ^"EPA County FIPS Code Listing".EPA.gov. Archived fromthe original on August 4, 2012. RetrievedFebruary 23, 2008.
  2. ^abNational Association of Counties."NACo – Find a county". Archived fromthe original on April 21, 2005. RetrievedApril 26, 2007.
  3. ^"Montana county seats & corresponding license plate numbers". Montana Association of Counties. RetrievedJanuary 2, 2022.
  4. ^"What's the deal with Montana's license plate numbering system?".Billings Gazette. May 2, 2014. RetrievedJanuary 2, 2022.
  5. ^"2024 U.S. Census QuickFacts: Montana".U.S. Census Bureau. RetrievedMarch 15, 2025.
  6. ^Muntmyler, L. E. (April 1914). "An Enjoyable Water Trip?".Hunter-Trader-Trapper.Columbus, Ohio: A. R. Harding: 52.
  7. ^Greene, Jerome (2008).Stricken Field: The Little Bighorn Since 1876 (Hardcover).Norman, Oklahoma:University of Oklahoma Press. p. 263.ISBN 978-0-8061-3791-9.
  8. ^abHill, Thomas (1915).The Open Door To Independence.Chicago, Illinois: Hill Standard Book Company. p. 225.
  9. ^Fay, Robert; Branson, Carl (1959)."Oklahoma Geological Survey"(PDF). Ogs.edu.
  10. ^"Guidebook … Annual Field Conference" (13). 1962: 143.Townsend, Montana lies in the central part of Townsend Valley at an elevation of 3833 and is the county seat of Broadwater County. The town was named for an official of the Northern Pacific Railroad. The county was named for Colonel Charles A. Broadwater, an early pioneer.{{cite journal}}:Cite journal requires|journal= (help)
  11. ^"Carter County Montana".www.cartercountymt.info. RetrievedMarch 18, 2018.
  12. ^abBig Horn County, Montana Territory was not the same county as present dayBig Horn County, Montana.
  13. ^"Montana Place Names from Alzada to Zortman".Montana Place Names Companion Website. Montana Historical Society and Montana State Library. RetrievedOctober 31, 2015.

Further reading

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