Montana County Map With Cities

Complete list of all 56 counties in Montana with population, area, and median income — plus a free printable blank map.

Counties

Population

1,117,606

Area

145,546 sq mi

Capital

Helena

Time Zone

Mountain (MT)

Tap or click any county for details. Need a printable version? Blank Montana county map (PDF/PNG/SVG).

All 56 Montana counties

County	Largest City	Population ▼	Area	Median Income	Cities
Yellowstone	Billings	168,503	2,633 mi²	$79,471	9
Gallatin	Bozeman	124,462	2,603 mi²	$93,570	7
Missoula	Missoula	119,280	2,593 mi²	$76,637	9
Flathead	Kalispell	104,257	5,088 mi²	$73,505	15
Cascade	Great Falls	84,584	2,698 mi²	$68,748	14
Lewis and Clark	Helena	73,928	3,459 mi²	$81,913	8
Ravalli	Hamilton	47,733	2,391 mi²	$73,290	10
Lake	Polson	36,471	1,490 mi²	$67,893	12
Silver Bow	Butte	35,379	718 mi²	$61,437	3
Lincoln	Libby	21,175	3,613 mi²	$48,941	7
Park	Livingston	17,500	2,803 mi²	$70,458	9
Hill	Havre	17,162	2,899 mi²	$52,675	7
Glacier	Browning	13,644	2,996 mi²	$48,137	4
Jefferson	Clancy	13,276	1,656 mi²	$96,902	6
Sanders	Plains	13,266	2,761 mi²	$58,174	9
Custer	Miles City	12,034	3,783 mi²	$71,173	4
Big Horn	Hardin	11,997	4,995 mi²	$58,287	11
Richland	Sidney	11,876	2,084 mi²	$74,079	5
Fergus	Lewistown	11,683	4,340 mi²	$64,361	10
Roosevelt	Wolf Point	11,059	2,355 mi²	$58,462	6
Carbon	Red Lodge	10,782	2,049 mi²	$82,064	10
Deer Lodge	Anaconda	10,073	737 mi²	$58,227	3
Stillwater	Columbus	10,055	1,795 mi²	$85,946	8
Madison	Ennis	9,981	3,587 mi²	$90,721	12
Beaverhead	Dillon	9,667	5,542 mi²	$61,749	8
Dawson	Glendive	8,790	2,372 mi²	$71,843	4
Rosebud	Lame Deer	8,058	5,010 mi²	$52,684	10
Valley	Glasgow	7,431	4,926 mi²	$77,089	10
Powell	Deer Lodge	7,219	2,326 mi²	$66,494	7
Blaine	Chinook	6,690	4,228 mi²	$65,619	7
Teton	Choteau	6,424	2,272 mi²	$73,362	6
Pondera	Conrad	6,155	1,623 mi²	$52,731	5
Mineral	Superior	5,729	1,219 mi²	$64,024	6
Granite	Clinton	5,529	1,727 mi²	$72,079	4
Broadwater	Townsend	5,412	1,193 mi²	$65,555	4
Chouteau	Fort Benton	5,005	3,972 mi²	$64,722	7
Musselshell	Roundup	4,849	1,868 mi²	$58,936	2
Toole	Shelby	4,826	1,916 mi²	$61,880	7
Phillips	Malta	4,462	5,140 mi²	$54,060	6
Sheridan	Plentywood	3,709	1,677 mi²	$71,274	10
Sweet Grass	Big Timber	3,624	1,855 mi²	$77,645	4
Powder River	Ashland	2,886	3,297 mi²	$58,277	7
Fallon	Baker	2,775	1,621 mi²	$81,465	3
Liberty	Chester	2,136	1,430 mi²	$57,135	5
Judith Basin	Stanford	2,066	1,870 mi²	$57,920	6
Wheatland	Harlowton	2,059	1,423 mi²	$50,085	4
Meagher	White Sulphur Springs	2,058	2,392 mi²	$70,065	3
Daniels	Scobey	1,480	1,426 mi²	$58,484	4
McCone	Circle	1,377	2,643 mi²	$74,444	4
Prairie	Terry	1,258	1,737 mi²	$63,000	3
Wibaux	Wibaux	1,204	889 mi²	$68,250	1
Carter	Ekalaka	1,100	3,341 mi²	$58,053	4
Garfield	Jordan	1,087	4,675 mi²	$69,693	6
Treasure	Hysham	996	977 mi²	$60,309	3
Golden Valley	Lavina	990	1,175 mi²	$63,901	2
Petroleum	Winnett	395	1,655 mi²	$62,813	1

How many counties does Montana have?

Montana has 56 counties covering 145,546 square miles and roughly 1,117,606 residents. The state was admitted to the Union in 1889 as the 41st state, and the current county boundaries reflect more than a century of administrative subdivision.

The largest county by land area is Beaverhead County at 5,542 square miles, home to about 9,667 residents. The most populous is Yellowstone County with approximately 168,503 residents — a density of about 64 people per square mile.

At the other end of the scale, Petroleum County has only about 395 residents.

Montana’s capital is Helena, while the largest city is Billings — a common pattern in the United States, where many states placed their capitals in smaller, more central towns rather than their largest commercial hubs.

Related resources

Download a printable outline of Montana’s county boundaries from our blank map of Montana page — available in SVG, PNG, and PDF.

Use the What County Am I In? tool to detect which Montana county a GPS location or address falls in, or the Address to County Lookup for batch input.

For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Montana address and see every ZIP code and the total population inside.

Two SimpleMapLab studies cover Montana specifically: the 100-mile radius around Helena measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Montana ranks the state’s most isolated inhabited place. The county-counts blog post puts Montana’s 56 counties in national context.

Frequently asked questions

Montana has 56 counties. The state was admitted to the Union in 1889 as the 41st state. County boundaries have shifted over time as the population spread and new administrative units were carved from existing ones.

Beaverhead County is the largest by land area at 5,542 square miles, with about 9,667 residents.

Yellowstone County is the most populous, with approximately 168,503 residents over 2,633 square miles.

Petroleum County has the smallest population at about 395 residents.

Helena is the state capital. The largest city is Billings — a common pattern in the US, where many states placed their capitals in smaller, more central towns rather than their largest commercial hubs.

Population, area, and demographic figures are aggregated from ZIP-code-level US Census data (via the SimpleMaps dataset) and the US Census Gazetteer. County boundaries used to render the map are from the US Atlas TopoJSON build of the Census Bureau's TIGER/Line shapefiles. The data is public domain.

Data sources

Population and demographics are aggregated from ZIP-code-level US Census data via the SimpleMaps dataset. Countiesboundaries are from the US Atlas TopoJSON build of the Census Bureau’s TIGER/Line shapefiles. Land area is from the Census Gazetteer. State counts follow the US Census Bureau’s definition of counties and county-equivalents (50 states + DC = 3,144). All sources are public domain.

Neighboring states