Montana County Map

All 56 counties with county seats and major cities

Montana has 56 counties, more than twice the 27 it had before the county-splitting craze of the 1910s. This map shows all 56 counties and their county seats. Tap a county for details, or download the free printable map below.

Montana county map showing all 56 counties with county names and county seats
Map of Montana counties with county seats (dots) and the state capital, Helena (star). Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Updated October 4, 2026 · Boundaries: U.S. Census Bureau 2025 · Population: Census estimates for July 1, 2025

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Montana county facts

Number of counties
56
Largest by land area
Beaverhead County 5,543 sq mi
Smallest by land area
Silver Bow County 718 sq mi
Most people
Yellowstone County 172,692
Fewest people
Petroleum County 548
Fastest growing since 2020
Broadwater County +25.4%
Highest median household income
Jefferson County $95,490
Oldest county
Beaverhead County est. 1865
Newest county
Petroleum County est. 1925
State capital
Helena Lewis and Clark County

The Montana part of Yellowstone National Park was a separate county-equivalent in Census data until November 7, 1997, when it was annexed to Gallatin and Park counties.

List of 56 Montana counties

Sorted A–Z. Click a column to sort, or a name to show it on the map. Download as CSV

CountyCounty seatPopulation 2025Change since 2020Land area (sq mi)Median incomeEstablishedFIPS
Beaverhead CountyDillon10,043+7.2%5,543$61,268186530001
Big Horn CountyHardin12,752−2.8%4,998$58,750191330003
Blaine CountyChinook6,860−2.6%4,228$64,813191230005
Broadwater CountyTownsend8,493+25.4%1,192$70,374189730007
Carbon CountyRed Lodge11,466+9.5%2,048$80,261189530009
Carter CountyEkalaka1,383−2.1%3,341$54,167191730011
Cascade CountyGreat Falls85,029+0.7%2,698$67,690188730013
Chouteau CountyFort Benton5,865−0.8%3,973$58,218186530015
Custer CountyMiles City12,034+1.5%3,783$70,605186530017
Daniels CountyScobey1,612−2.5%1,426$55,625192030019
Dawson CountyGlendive8,692−2.8%2,372$71,334186930021
Deer Lodge CountyAnaconda9,709+3%737$57,527186530023
Fallon CountyBaker2,959−3%1,621$76,250191330025
Fergus CountyLewistown11,825+3.3%4,339$63,706188530027
Flathead CountyKalispell115,429+10.6%5,087$73,925189330029
Gallatin CountyBozeman128,740+8.2%2,605$93,528186530031
Garfield CountyJordan1,148−1.9%4,677$69,583191930033
Glacier CountyCut Bank13,463−2.3%2,995$46,875191930035
Golden Valley CountyRyegate844+2.2%1,174$58,333192030037
Granite CountyPhilipsburg3,658+10.8%1,727$59,265189330039
Hill CountyHavre16,167−0.7%2,899$52,798191230041
Jefferson CountyBoulder13,329+10.3%1,657$95,490186530043
Judith Basin CountyStanford2,162+7%1,870$59,000192030045
Lake CountyPolson33,392+7.3%1,491$63,360192330047
Lewis and Clark CountyHelena75,331+6.1%3,458$78,237186530049
Liberty CountyChester1,957−0.1%1,430$57,857192030051
Lincoln CountyLibby22,328+13.5%3,613$47,143190930053
Madison CountyVirginia City10,026+16.3%3,588$75,250186530057
McCone CountyCircle1,720−0.5%2,642$69,375191930055
Meagher CountyWhite Sulphur Springs2,137+11%2,392$71,932186730059
Mineral CountySuperior5,185+14.5%1,220$63,450191430061
Missoula CountyMissoula123,513+4.7%2,593$75,598186530063
Musselshell CountyRoundup5,582+17.9%1,869$58,920191130065
Park CountyLivingston18,214+5.9%2,803$70,047188730067
Petroleum CountyWinnett548+10%1,656$60,208192530069
Phillips CountyMalta4,203−0.3%5,140$53,417191530071
Pondera CountyConrad6,072+2.8%1,625$52,338191930073
Powder River CountyBroadus1,781+5.1%3,298$67,045191930075
Powell CountyDeer Lodge7,157+3.1%2,326$66,923190130077
Prairie CountyTerry1,112+1.7%1,737$51,250191530079
Ravalli CountyHamilton48,582+10%2,391$71,283189330081
Richland CountySidney11,377−1%2,085$73,084191430083
Roosevelt CountyWolf Point10,242−5.2%2,355$57,063191930085
Rosebud CountyForsyth8,253−1%5,008$49,914190130087
Sanders CountyThompson Falls14,062+13.5%2,760$57,476190530089
Sheridan CountyPlentywood3,436−3.1%1,677$70,147191330091
Silver Bow CountyButte36,118+2.8%718$61,754188130093
Stillwater CountyColumbus9,445+5.4%1,797$84,732191330095
Sweet Grass CountyBig Timber3,762+2.2%1,856$77,000189530097
Teton CountyChoteau6,496+4.3%2,272$70,430189330099
Toole CountyShelby5,211+4.9%1,915$57,731191430101
Treasure CountyHysham728−4.2%978$67,917191930103
Valley CountyGlasgow7,385−2.6%4,926$71,695189330105
Wheatland CountyHarlowton2,100+1.5%1,423$49,489191730107
Wibaux CountyWibaux885−5.6%890$67,462191430109
Yellowstone CountyBillings172,692+4.8%2,633$76,570188330111

Montana county map with cities

The largest cities in Montana and the counties they are in. Cities that cross a county line list every county, the main one first. To find any smaller town, use the search box above.

Montana county map with cities and county seats
Montana counties with county seat towns. Download the full-size image
CityCountyPopulation 2025
BillingsYellowstone County121,239
MissoulaMissoula County78,903
Great FallsCascade County60,208
BozemanGallatin County58,814
ButteSilver Bow County35,469
HelenaLewis and Clark County35,138
KalispellFlathead County31,851
BelgradeGallatin County13,107
AnacondaDeer Lodge County9,709
WhitefishFlathead County9,358
LivingstonPark County9,290
HavreHill County9,264
Miles CityCuster County8,450
LaurelYellowstone County7,205
SidneyRichland County6,217
LewistownFergus County6,179
Columbia FallsFlathead County5,753
PolsonLake County5,653
HamiltonRavalli County5,451
GlendiveDawson County4,736
DillonBeaverhead County4,271
HardinBig Horn County3,696
ShelbyToole County3,313
LibbyLincoln County3,274
GlasgowValley County3,145
Deer LodgePowell County3,025
Cut BankGlacier County2,976
Red LodgeCarbon County2,723
Wolf PointRoosevelt County2,531
ConradPondera County2,393

Printable Montana county maps (free PDF, PNG, SVG)

Every map is free to print and share. The PDFs are vector files with real text, so they stay sharp at any size and you can search them for a county name. Use 11×17 (tabloid) for the most readable labels.

Montana county map with all 56 counties labeled

Color map with names

All 56 counties labeled, county seats marked. Letter and 11×17 PDF, high-resolution PNG, editable SVG.

Montana county map with cities

Map with cities

Counties with their county seat towns and major cities.

Blank outline map of Montana counties

Blank outline map

County lines only, no names. For quizzes, coloring and your own notes.

Montana county map with numbers

Numbered map with key

A number in every county with an alphabetical key.

Black and white Montana county map

Black and white

Labeled map that prints well on any printer.

Map of Montana counties shaded by population density

Population map

Counties shaded by population density (2025 estimates).

Data and GIS files

The county table as CSV, and the boundaries as GeoJSON and KML (Google Earth, Google My Maps).

Why Montana has 56 counties

Montana Territory began with nine counties in 1865, and the state still had only 27 when homesteaders poured into the eastern plains in the 1910s. The newcomers wanted local government closer to home. A county seat brought courts, filing offices and jobs, and since each county then elected its own state senator, more rural counties gave farmers a stronger voice in the legislature. In 1915 the legislature passed a law that let residents redraw county lines by petition. Within a few years the 27 counties had split into 56, a fad known as county-busting. Petroleum County, carved from Fergus County by petition and election in 1925, was the last. Many of the small counties have struggled since. Nearly every legislature since 1936 has considered combining some of them, but residents have refused to give up their county seats.

County maps of neighboring states

Montana counties: questions and answers

How many counties are in Montana?
Montana has 56 counties.
What is the largest county in Montana?
By land area, Beaverhead County is the largest (5,543 sq mi). By population, Yellowstone County is the largest, with 172,692 people (2025 estimate).
What is the smallest county in Montana?
Silver Bow County is the smallest by land area (718 sq mi). Petroleum County has the fewest people: 548 (2025 estimate).
What is the wealthiest county in Montana?
By median household income, Jefferson County ranks first with $95,490 (American Community Survey 2020–2024). The lowest is Glacier County at $46,875.
What county is Billings in?
Billings is in Yellowstone County.
What county is Missoula in?
Missoula is in Missoula County.
What county is Great Falls in?
Great Falls is in Cascade County.
What county is Helena in?
Helena, the state capital, is in Lewis and Clark County.
How can I see county lines on Google Maps?
Google Maps does not draw county lines. Download the KML file from the printable maps section above and import it into Google My Maps (Create a new map › Import) or open it in Google Earth to see every Montana county boundary on top of Google's map.
Can I use this map for free?
Yes. The maps and files on this page are free to print, share and use in your own work, including commercial projects, under the CC BY 4.0 licence. Please credit “WhichCounty (whichcounty.com)”.

Use this map on your site

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Sources and methodology

Found an error? Tell us. Last data update: October 4, 2026.