State 30 · MT

Montana county map

Montana has 56 counties. Beaverhead County is the largest by land at 5,543 square miles, and Yellowstone County is the most populous with 171,583 residents.

Population 2024
1,137,233
#43 of 51
Land area
145,550 sq mi
#4 of 51
Density
7.8 / sq mi
#49 of 51
Counties
56
Capital: Helena
N
Helena 46.59° N, 112.02° W

Map of all 56 counties in Montana

Every county is labeled on Census 2024 boundaries. Download it as a PDF to print, a PNG, or an editable SVG. For blank, colored or city versions, see the printable Montana map sheets.

BeaverheadBig HornBlaineBroadwaterCarbonCarterCascadeChouteauCusterDanielsDawsonDeer LodgeFallonFergusFlatheadGallatinGarfieldGlacierGolden ValleyGraniteHillJeffersonJudith BasinLakeLewis and ClarkLibertyLincolnMcConeMadisonMeagherMineralMissoulaMusselshellParkPetroleumPhillipsPonderaPowder RiverPowellPrairieRavalliRichlandRooseveltRosebudSandersSheridanSilver BowStillwaterSweet GrassTetonTooleTreasureValleyWheatlandWibauxYellowstoneMontana county map. Online Map Tools (onlinemaptools.com), Census 2024 boundaries, free to reuse with credit.
56 units labeled. The orange dot marks the capital.

Montana population and land area

Montana had 1,137,233 residents in the Census Vintage 2024 estimates, the sum of its counties. That ranks 43rd of the 50 states and DC. Its 145,550 square miles of land rank 4th. Montana averages 7.8 people per square mile of land, a small fraction of the national figure of 96.3. By density it ranks 49th.

Population, 2024
1,137,23343rd of 51
Land area
145,550 sq mi4th of 51
Density
7.8 per sq mi49th of 51
Number of counties
56
Capital
Helena46.586° N, 112.017° W
State FIPS code
30

Montana counties by population, density and income

Each shape is shaded by quintile, darker for higher values. Switch the measure above the map. Select a shape to open that county's page. The pin marks the capital, Helena.

Liberty County: 1.4Golden Valley County: 0.7Dawson County: 3.7Flathead County: 23Beaverhead County: 1.8Prairie County: 0.6Garfield County: 0.3Lewis and Clark County: 22Sweet Grass County: 2.0Wheatland County: 1.4Ravalli County: 20Jefferson County: 8.0Carter County: 0.4Chouteau County: 1.5Custer County: 3.2Teton County: 2.8Granite County: 2.1Deer Lodge County: 13Cascade County: 31Powder River County: 0.5Meagher County: 0.9Daniels County: 1.1Glacier County: 4.5Wibaux County: 1.0Fallon County: 1.8McCone County: 0.6Sheridan County: 2.1Missoula County: 47Toole County: 2.7Sanders County: 5.0Roosevelt County: 4.3Rosebud County: 1.6Treasure County: 0.8Yellowstone County: 65Blaine County: 1.6Musselshell County: 2.9Broadwater County: 7.0Powell County: 3.1Fergus County: 2.7Phillips County: 0.8Gallatin County: 49Silver Bow County: 50Madison County: 2.7Richland County: 5.3Lake County: 22Valley County: 1.5Judith Basin County: 1.1Hill County: 5.5Big Horn County: 2.6Stillwater County: 5.3Carbon County: 5.6Mineral County: 4.3Petroleum County: 0.3Pondera County: 3.7Park County: 6.4Lincoln County: 6.1
Density
  1. < 1.1
  2. 1.1+
  3. 2.1+
  4. 3.7+
  5. 7.0+
no data

Largest county in Montana by land area

Beaverhead County ranks first at 5,543 square miles and Silver Bow County last at 718 square miles. The top value is 7.7 times the bottom one.

  1. 01Beaverhead County5,543
  2. 02Phillips County5,140
  3. 03Flathead County5,087
  4. 04Rosebud County5,008
  5. 05Big Horn County4,998
  6. 06Valley County4,926
  7. 07Garfield County4,677
  8. 08Fergus County4,339
  9. 09Blaine County4,228
  10. 10Chouteau County3,973

Most populous county in Montana

Yellowstone County ranks first at 171,583 residents and Petroleum County last at 525 residents. The gap is more than a hundredfold.

  1. 01Yellowstone County171,583
  2. 02Gallatin County126,984
  3. 03Missoula County122,546
  4. 04Flathead County114,527
  5. 05Cascade County84,523
  6. 06Lewis and Clark County75,129
  7. 07Ravalli County48,187
  8. 08Silver Bow County36,134
  9. 09Lake County33,403
  10. 10Lincoln County22,184

Least populous county in Montana

The smallest populations, fewest first. Estimates for small counties carry more uncertainty than those for large ones.

  1. 01Petroleum County525
  2. 02Treasure County739
  3. 03Golden Valley County863
  4. 04Wibaux County911
  5. 05Prairie County1,112
Log scale, so small counties stay visible next to the largest.

Most densely populated county in Montana

Yellowstone County ranks first at 65.2 people per square mile and Garfield County last at 0.3 people per square mile. The gap is more than a hundredfold.

  1. 01Yellowstone County65.2
  2. 02Silver Bow County50.3
  3. 03Gallatin County48.7
  4. 04Missoula County47.3
  5. 05Cascade County31.3
  6. 06Flathead County22.5
  7. 07Lake County22.4
  8. 08Lewis and Clark County21.7
  9. 09Ravalli County20.2
  10. 10Deer Lodge County13.3
People per square mile of land, log scale.

Highest median household income in Montana

Gallatin County ranks first at $90,942 and Wheatland County last at $47,545. The two are within a factor of 1.91.

  1. 01Gallatin County$90,942
  2. 02Jefferson County$85,163
  3. 03Stillwater County$81,392
  4. 04Lewis and Clark County$76,816
  5. 05Richland County$74,540
  6. 06Flathead County$74,150
  7. 07Madison County$73,316
  8. 08Broadwater County$72,933
  9. 09Missoula County$72,882
  10. 10Carbon County$72,463

Towns and cities in Montana

The Census Vintage 2024 subcounty estimates list 55 incorporated places in Montana with 1,000 or more residents, holding 591,686 people together, or 52% of the state total. 19 of them have 5,000 or more. The northernmost is Eureka at 48.879° N and the southernmost is West Yellowstone at 44.662° N. Among places of 5,000+, Kalispell grew fastest from July 2020 to July 2024, by 23.9%.

  1. 01Billings121,483
  2. 02Missoula78,204
  3. 03Great Falls60,013
  4. 04Bozeman57,894
  5. 05Butte-Silver Bow35,480
  6. 06Helena34,729
  7. 07Kalispell31,296
  8. 08Belgrade12,741
  9. 09Anaconda-Deer Lodge County9,811
  10. 10Whitefish9,256
  11. 11Havre9,204
  12. 12Livingston9,021
Largest incorporated places, Vintage 2024 estimates.

Helena, the capital

54.4% of Montana's place population, 322,165 of 591,686 people, lives in places within 100 miles of Helena. That ranks 36th of 51 for how central the capital is. The most remote town of 1,000 to 9,999 people is Malta, 169 miles in a straight line from the nearest place of 10,000+ (Great Falls).

See all states in the capital radius ranking and the most remote towns ranking. Sunrise and sunset times for Helena, month by month, are on the Helena daylight page.

States bordering Montana

Montana borders 4 states or districts. The nearest neighboring capital is Boise, 290 miles SW of Helena in a straight line.

UTM zones in Montana

The internal points of Montana's counties fall in UTM zones 11, 12, 13. Zones are 6 degrees of longitude wide, numbered from 180° W: zone = floor((longitude + 180) / 6) + 1. Because Montana spans 3 zones, no single UTM zone covers the whole state.

All 56 counties in Montana

Sort by any column. The small orange number marks the top 3 in the state by population.

FIPS
30111Yellowstone County171,583#12,63365.2$70,221
30031Gallatin County126,984#22,60548.7$90,942
30063Missoula County122,546#32,59347.3$72,882
30029Flathead County114,5275,08722.5$74,150
30013Cascade County84,5232,69831.3$65,018
30049Lewis and Clark County75,1293,45821.7$76,816
30081Ravalli County48,1872,39120.2$70,624
30093Silver Bow County36,13471850.3$58,406
30047Lake County33,4031,49022.4$60,882
30053Lincoln County22,1843,6136.1$51,941
30067Park County18,0742,8026.4$63,958
30041Hill County16,0652,8995.5$51,435
30089Sanders County13,8952,7605.0$54,599
30035Glacier County13,5032,9954.5$51,416
30043Jefferson County13,3041,6578.0$85,163
30003Big Horn County12,7964,9982.6$51,259
30017Custer County11,9643,7833.2$58,850
30027Fergus County11,8624,3392.7$63,717
30009Carbon County11,4982,0485.6$72,463
30083Richland County11,0282,0855.3$74,540
30085Roosevelt County10,1972,3554.3$51,596
30001Beaverhead County10,0065,5431.8$63,084
30023Deer Lodge County9,81173713.3$56,648
30057Madison County9,7533,5882.7$73,316
30095Stillwater County9,4501,7975.3$81,392
30021Dawson County8,7312,3723.7$60,663
30007Broadwater County8,3021,1927.0$72,933
30087Rosebud County8,1945,0081.6$60,218
30105Valley County7,4344,9261.5$63,507
30077Powell County7,1202,3263.1$61,354
30005Blaine County6,9034,2281.6$56,865
30099Teton County6,4442,2722.8$71,393
30073Pondera County6,0781,6253.7$47,659
30015Chouteau County5,8803,9731.5$61,903
30065Musselshell County5,4521,8692.9$55,991
30061Mineral County5,1951,2204.3$58,832
30101Toole County5,1531,9152.7$52,399
30071Phillips County4,2145,1400.8$53,212
30097Sweet Grass County3,7571,8562.0$70,052
30039Granite County3,6021,7272.1$65,695
30091Sheridan County3,4481,6772.1$58,094
30025Fallon County2,9461,6211.8$66,776
30045Judith Basin County2,1111,8701.1$57,166
30059Meagher County2,0652,3920.9$55,193
30107Wheatland County2,0581,4221.4$47,545
30051Liberty County1,9341,4301.4$60,846
30075Powder River County1,7343,2980.5$56,746
30055McCone County1,7172,6420.6$56,696
30019Daniels County1,6251,4261.1$56,695
30011Carter County1,3993,3400.4$55,704
30033Garfield County1,1814,6770.3$53,069
30079Prairie County1,1121,7370.6$52,555
30109Wibaux County9118901.0$56,108
30037Golden Valley County8631,1740.7$47,927
30103Treasure County7399780.8$61,560
30069Petroleum County5251,6560.3$50,164

Download all 56 counties as CSV

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 Gazetteer, places
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.