Idaho

Sitemap to all pages covering the state of Idaho. Photo contributions by Alex Nitzman, Andy Field, Brent Ivy, Chris Kalina and Landry Heaton.

Highway Guides

U.S. Highways

State Highways

Other Roads

Population Statistics

State Population
1,839,106
Metropolitan Populations
Boise City 764,718 Coeur d’Alene 171,362
Idaho Falls 157,429 Logan 147,348
Twin Falls 114,283 Pocatello 94,896
Top County Populations
Ada 494,967 Canyon 231,105
Kootenai 171,362 Bonneville 123,964
Twin Falls 90,046 Bannock 87,018
Top City Populations
Boise 229,776 Meridian 121,182
Nampa 103,215 Idaho Falls 64,142
Caldwell 60,674 Pocatello 57,029
Coeur d’Alene 53,354 Twin Falls 51,411
Sources: 2020 U.S. Census (metro populations and counties), 2020 U.S. Census Estimate (cities)

About Idaho

  • Capital: Boise
  • Nickname: Gem State
  • Area: 82,751 square miles
  • Statehood: 43rd state; admitted July 3, 1890
  • Total Interstate Mileage: 611.76 miles
  • Highest Point: Borah Peak, 12,662 feet

Updated December 31, 2021.