Sitemap to all pages covering the state of Montana. Photo contributions by Alex Nitzman, Andy Field, Billy Fortner, Brent Ivy and Chris Kalina.

Highway Guides

State Highways

Routes in Montana are classified in the following categories:

  • Interstate Routes – 1,192.24 miles
  • Non-Interstate NHS Routes (N Routes) – 2,686.07 miles
  • Primary Routes (P Routes) – 2,813.61 miles
  • Secondary Routes (S Routes) – 4,674.12 miles
  • Urban Routes (U Routes) – 391.82 miles

Mileage statistics of each function class obtained from the 2011 MTD Montana Road Log.

Population Statistics

State Population
989,415
Metropolitan Populations
Billings 158,934 Missoula 109,299
Kalispell 90,928 Great Falls 81,327
Helena 74,801 Butte-Silver Bow 34,200
Top County Populations
Yellowstone 147,972 Missoula 109,299
Flathead 90,928 Gallatin 89,513
Cascade 81,327 Lewis and Clark 63,395
Top City Populations
Billings 104,170 Missoula 66,788
Great Falls 58,505 Bozeman 37,280
Butte 33,525 Helena 28,190
Kalispell 19,927 Havre 9,310
Source:
Montana QuickFacts from the US Census Bureau – 2010 Census Data
List of metropolitan areas of the United States @ Wikipedia.org.

About Montana

  • Capital: Helena
  • Nickname: Treasure State or Big Sky Country
  • State Flower: Bitterroot
  • State Bird: Western Meadowlark
  • State Animal: Grizzly Bear
  • Total Interstate Mileage: 1,191.23
  • Land Area: 145,545.80 square miles
  • Highest Point: Granite Peak – 12,799 feet
  • Lowest Point: Kootenai River at the Idaho state line, northwest of Troy – 1,820 feet
  • Number of Counties: 56
  • Statehood: 41st state; admitted November 8, 1889