Montana is divided into 56 counties, each managed by its own local government. Use this interactive map and advanced search features to explore Montana’s counties, major cities, towns, and ZIP codes.

Interactive Map of All Montana Counties

Click on any county below to explore more about it.

No.	County Name	Largest City	County Map & Zip Code
1	Yellowstone	Billings	Yellowstone County Map Link
2	Missoula	Missoula	Missoula County Map Link
3	Cascade	Great Falls	Cascade County Map Link
4	Gallatin	Bozeman	Gallatin County Map Link
5	Silver Bow	Butte	Silver Bow County Map Link
6	Lewis and Clark	Helena	Lewis and Clark County Map Link
7	Flathead	Kalispell	Flathead County Map Link
8	Fergus	Lewistown	Fergus County Map Link
9	Powder River	Broadus	Powder River County Map Link
10	Carbon	Red Lodge	Carbon County Map Link
11	Phillips	Malta	Phillips County Map Link
12	Hill	Havre	Hill County Map Link
13	Ravalli	Hamilton	Ravalli County Map Link
14	Custer	Miles City	Custer County Map Link
15	Lake	Polson	Lake County Map Link
16	Dawson	Glendive	Dawson County Map Link
17	Roosevelt	Wolf Point	Roosevelt County Map Link
18	Beaverhead	Dillon	Beaverhead County Map Link
19	Chouteau	Fort Benton	Chouteau County Map Link
20	Valley	Glasgow	Valley County Map Link
21	Toole	Shelby	Toole County Map Link
22	Big Horn	Hardin	Big Horn County Map Link
23	Musselshell	Roundup	Musselshell County Map Link
24	Blaine	Chinook	Blaine County Map Link
25	Madison	Virginia City	Madison County Map Link
26	Pondera	Conrad	Pondera County Map Link
27	Richland	Sidney	Richland County Map Link
28	Powell	Deer Lodge	Powell County Map Link
29	Rosebud	Forsyth	Rosebud County Map Link
30	Deer Lodge	Anaconda	Deer Lodge County Map Link
31	Teton	Choteau	Teton County Map Link
32	Stillwater	Columbus	Stillwater County Map Link
33	Treasure	Hysham	Treasure County Map Link
34	Sheridan	Plentywood	Sheridan County Map Link
35	Sanders	Thompson Falls	Sanders County Map Link
36	Judith Basin	Stanford	Judith Basin County Map Link
37	Daniels	Scobey	Daniels County Map Link
38	Glacier	Cut Bank	Glacier County Map Link
39	Fallon	Baker	Fallon County Map Link
40	Sweet Grass	Big Timber	Sweet Grass County Map Link
41	McCone	Circle	McCone County Map Link
42	Carter	Ekalaka	Carter County Map Link
43	Broadwater	Townsend	Broadwater County Map Link
44	Wheatland	Harlowton	Wheatland County Map Link
45	Prairie	Terry	Prairie County Map Link
46	Granite	Philipsburg	Granite County Map Link
47	Meagher	White Sulphur Springs	Meagher County Map Link
48	Liberty	Chester	Liberty County Map Link
49	Park	Livingston	Park County Map Link
50	Garfield	Jordan	Garfield County Map Link
51	Jefferson	Boulder	Jefferson County Map Link
52	Wibaux	Wibaux	Wibaux County Map Link
53	Golden Valley	Ryegate	Golden Valley County Map Link
54	Mineral	Superior	Mineral County Map Link
55	Petroleum	Winnett	Petroleum County Map Link
56	Lincoln	Libby	Lincoln County Map Link

Montana County Map Download

You can download the Montana County Map from below:

Frequently Asked Questions

The largest county in Montana by area is Beaverhead County.

Area: Approximately 5,572 square miles
County Seat: Dillon
Location: Southwestern Montana

The smallest county in Montana by land area is Silver Bow County, encompassing approximately 718 square miles of land. Located in southwestern Montana, its county seat is Butte, which is also the state’s fifth-largest city.

Montana has a total of 56 counties.

Source: Wikipedia, Census.gov