States101 
Idaho
State Facts
There are an equal number of men and women in Idaho. The overall gender ratio is 100 men to 100 women.
The Idaho flag was adopted on November 2, 1957. The flag has been ranked the 49th best U.S. flag by a leading Vexillology Organization.
The Idaho quarter was the 43rd quarter released overall. The quarter was released on June 5, 2007.
Recent estimates put Idaho's population at around 1,634,000 people (40th out of 56).The population density is 19.8 people per square mile (50th out of 56).
Someone from Idaho is known as a Idahoan. View our List of Adjectival and Demonyms for all the States.
Idaho was the 43rd state when it joined the United States on July 3, 1890. Prior to 1890, Idaho was known as "Idaho Territory."
Essential Idaho Facts
-
ID
Postal Code
The Idaho postal code is ID. This abbreviation has been used since the USPS first established official codes in October 1963. -
Gender Ratio
Gender Ratio: 100 Men to 100 Women
Male Population: 818,496 men
Female Population: 815,968 women
-
State Flag
The 6 main colors in the Idaho flag are #003776, #FFE835, #FFB32B, #000000, #86E2FF, and #EF1439 -
State Quarter
The Idaho Quarter was released in June 06, 2007.
Total Mintage: 0.58 billion.
Engraver: Don Everhart -
Population and Area
Population: 1,634,464 people
Land Area: 82,643 square miles
Population Density: 1,634,464 people per square mile
Areas Codes in Idaho (4)
- 208
- 307
- 435
- 509
Idaho Counties (44)
| County | Top Cities |
|---|---|
| Ada County | Boise, Eagle, Garden City, Kuna, Meridian, and Star |
| Adams County | Council, Indian Valley, Mesa, and New Meadows |
| Bannock County | Arimo, Downey, Fort Hall, Inkom, Lava Hot Springs, and Mccammon |
| Bear Lake County | Bern, Bloomington, Dingle, Fish Haven, Geneva, and Georgetown |
| Benewah County | Desmet, Fernwood, Plummer, Saint Maries, Santa, and Tensed |
| Bingham County | Aberdeen, Atomic City, Basalt, Blackfoot, Firth, and Moreland |
| Blaine County | Bellevue, Carey, Hailey, Ketchum, Picabo, and Sun Valley |
| Boise County | Banks, Garden Valley, Horseshoe Bend, Idaho City, Lowman, and Placerville |
| Bonner County | Blanchard, Careywood, Clark Fork, Cocolalla, Colburn, and Coolin |
| Bonneville County | Idaho Falls, Iona, Irwin, Ririe, Swan Valley, and Ucon |
| Boundary County | Bonners Ferry, Eastport, Moyie Springs, Naples, and Porthill |
| Butte County | Arco, Howe, and Moore |
| Camas County | Corral, Fairfield, and Hill City |
| Canyon County | Caldwell, Greenleaf, Huston, Melba, Middleton, and Nampa |
| Caribou County | Bancroft, Conda, Grace, Soda Springs, and Wayan |
| Cassia County | Albion, Almo, Burley, Declo, Malta, and Oakley |
| Clark County | Dubois and Spencer |
| Clearwater County | Ahsahka, Elk River, Orofino, Pierce, and Weippe |
| Custer County | Challis, Clayton, Mackay, and Stanley |
| Elmore County | Atlanta, Glenns Ferry, Hammett, King Hill, Mountain Home, and Mountain Home A F B |
| Franklin County | Clifton, Dayton, Franklin, Preston, Thatcher, and Weston |
| Fremont County | Ashton, Chester, Island Park, Macks Inn, Parker, and Saint Anthony |
| Gem County | Emmett, Letha, Ola, and Sweet |
| Gooding County | Bliss, Gooding, Hagerman, and Wendell |
| Idaho County | Cottonwood, Elk City, Fenn, Ferdinand, Grangeville, and Greencreek |
| Jefferson County | Hamer, Lewisville, Menan, Monteview, Rigby, and Roberts |
| Jerome County | Eden, Hazelton, and Jerome |
| Kootenai County | Athol, Bayview, Cataldo, Coeur D Alene, Harrison, and Hayden |
| Latah County | Bovill, Deary, Genesee, Harvard, Juliaetta, and Kendrick |
| Lemhi County | Carmen, Cobalt, Ellis, Gibbonsville, Leadore, and Lemhi |
| Lewis County | Craigmont, Kamiah, Nezperce, Reubens, and Winchester |
| Lincoln County | Dietrich, Richfield, and Shoshone |
| Madison County | Newdale, Rexburg, and Sugar City |
| Minidoka County | Heyburn, Minidoka, Paul, and Rupert |
| Nez Perce County | Culdesac, Lapwai, Lenore, Lewiston, and Peck |
| Oneida County | Holbrook and Malad City |
| Owyhee County | Bruneau, Grand View, Homedale, Marsing, and Murphy |
| Payette County | Fruitland, New Plymouth, and Payette |
| Power County | American Falls, Arbon, and Rockland |
| Shoshone County | Avery, Calder, Clarkia, Kellogg, Kingston, and Mullan |
| Teton County | Driggs, Felt, Tetonia, and Victor |
| Twin Falls County | Buhl, Castleford, Filer, Hansen, Kimberly, and Murtaugh |
| Valley County | Cascade, Donnelly, Lake Fork, Mccall, and Yellow Pine |
| Washington County | Cambridge, Midvale, and Weiser |