Montana: Time Zones, Counties, Cities & Map

Metro and micro areas in Montana, largest first

5 metro areas and 2 micro areas have counties in Montana. Populations are July 2025 estimates.

1. Billings, MT Metro Area193,603 people
2. Bozeman, MT Metro Area128,740 people
3. Missoula, MT Metro Area128,698 people
4. Kalispell, MT Micro Area115,429 people
5. Helena, MT Metro Area97,153 people
6. Great Falls, MT Metro Area85,029 people
7. Butte-Silver Bow, MT Micro Area36,118 people

Every metro and micro area in the US

Tribal areas in Montana, largest first

1. Flathead Reservation32,167 people
2. Blackfeet Indian Reservation and Off-Reservation Trust Land10,199 people
3. Fort Peck Indian Reservation and Off-Reservation Trust Land9,785 people
4. Turtle Mountain Reservation and Off-Reservation Trust Land7,447 people
5. Crow Reservation and Off-Reservation Trust Land6,848 people
6. Northern Cheyenne Indian Reservation and Off-Reservation Trust Land4,363 people
7. Rocky Boy's Reservation and Off-Reservation Trust Land3,369 people
8. Fort Belknap Reservation and Off-Reservation Trust Land3,148 people

American Indian, Alaska Native and Native Hawaiian areas as the Census Bureau maps them, with at least 2% of their area here, water included. These lines don’t decide membership, jurisdiction or land status.

Counties and equivalents, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Yellowstone County, Montana172,692 people
2. Gallatin County, Montana128,740 people
3. Missoula County, Montana123,513 people
4. Flathead County, Montana115,429 people
5. Cascade County, Montana85,029 people
6. Lewis and Clark County, Montana75,331 people
7. Ravalli County, Montana48,582 people
8. Silver Bow County, Montana36,118 people
9. Lake County, Montana33,392 people
10. Lincoln County, Montana22,328 people
11. Park County, Montana18,214 people
12. Hill County, Montana16,167 people

See all 56 counties and equivalents in Montana, largest first

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Billings, Montana (city)119,434 people
2. Missoula, Montana (city)76,514 people
3. Great Falls, Montana (city)60,329 people
4. Bozeman, Montana (city)56,114 people
5. Butte-Silver Bow (balance), Montana35,052 people
6. Helena, Montana (city)33,639 people
7. Kalispell, Montana (city)28,504 people
8. Belgrade, Montana (city)11,872 people
9. Evergreen, Montana (CDP)9,611 people
10. Anaconda-Deer Lodge County, Montana9,597 people
11. Havre, Montana (city)9,258 people
12. Helena Valley Southeast, Montana (CDP)9,108 people

See all 497 cities, towns and communities in Montana, largest first

ZIP Code areas, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. ZIP 5990163,161 people
2. ZIP 5910247,977 people
3. ZIP 5971844,585 people
4. ZIP 5910142,250 people
5. ZIP 5971539,643 people
6. ZIP 5910535,480 people
7. ZIP 5970134,232 people
8. ZIP 5940533,350 people
9. ZIP 5960131,728 people
10. ZIP 5980130,916 people
11. ZIP 5960230,754 people
12. ZIP 5940428,822 people

See all 373 ZIP Code areas in Montana, largest first

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