Idaho (/ˈaɪdəhoʊ/ (listen)) is a state in the northwestern region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of approximately 1.7 million and an area of 83,569 square miles (216,440 km), Idaho is the 14th largest, the 12th least populous and the 7th least densely populated of the 50 U.S. states. The state’s capital and largest city is Boise.
Idaho borders six U.S. states and one Canadian province. The states of Washington and Oregon are to the west, Nevada and Utah are to the south, and Montana and Wyoming are to the east. Idaho also shares a short border with the Canadian province of British Columbia to the north.
The landscape is rugged with some of the largest unspoiled natural areas in the United States. For example, at 2.3 million acres (930,000 ha), the Frank Church-River of No Return Wilderness Area is the largest contiguous area of protected wilderness in the continental United States. Idaho is a Rocky Mountain state with abundant natural resources and scenic areas. The state has snow-capped mountain ranges, rapids, vast lakes and steep canyons. The waters of the Snake River rush through Hells Canyon, the deepest gorge in the United States. Shoshone Falls plunges down rugged cliffs from a height greater than Niagara Falls.
The major rivers in Idaho are the Snake River, the Clark Fork/Pend Oreille River, the Clearwater River, and the Salmon River. Other significant rivers include the Coeur d’Alene River, the Spokane River, the Boise River, and the Payette River. The Salmon River empties into the Snake in Hells Canyon and forms the southern boundary of Nez Perce County on its north shore, of which Lewiston is the county seat. The Port of Lewiston, at the confluence of the Clearwater and the Snake Rivers is the farthest inland seaport on the West Coast at 465 river miles from the Pacific at Astoria, Oregon.
Idaho’s highest point is Borah Peak, 12,662 ft (3,859 m), in the Lost River Range north of Mackay. Idaho’s lowest point, 710 ft (216 m), is in Lewiston, where the Clearwater River joins the Snake River and continues into Washington. The Sawtooth Range is often considered Idaho’s most famous mountain range. Other mountain ranges in Idaho include the Bitterroot Range, the White Cloud Mountains, the Lost River Range, the Clearwater Mountains, and the Salmon River Mountains.
Idaho has two time zones, with the dividing line approximately midway between Canada and Nevada. Southern Idaho, including the Boise metropolitan area, Idaho Falls, Pocatello, and Twin Falls, are in the Mountain Time Zone. A legislative error (15 U.S.C. ch. 6 §264) theoretically placed this region in the Central Time Zone, but this was corrected with a 2007 amendment. Areas north of the Salmon River, including Coeur d’Alene, Moscow, Lewiston, and Sandpoint, are in the Pacific Time Zone, which contains less than a quarter of the state’s population and land area.
The United States Census Bureau estimates Idaho’s population was 1,754,208 on July 1, 2018, an 11.91% increase since 2010.
Idaho had an estimated population of 1,754,208 in 2018, which was an increase of 37,265, from the prior year and an increase of 186,626, or 11.91%, since 2010. This includes a natural increase since the last census of 58,884 people (that is, 111,131 births minus 52,247 deaths) and an increase due to net migration of 75,795 people into the state. There are large numbers of Americans of English and German ancestry in Idaho. Immigration from outside the United States resulted in a net increase of 14,522 people, and migration within the country produced a net increase of 61,273 people.
This made Idaho the tenth fastest-growing state after District of Columbia (+16.74%), Utah (+14.37%), Texas (+14.14%), Florida (+13.29%), Colorado (+13.25%), North Dakota (+13.01%), Nevada (+12.36%), Arizona (+12.20%) and Washington. From 2017 to 2018, Idaho grew the second-fastest, surpassed only by Nevada.
Nampa, about 20 miles (30 km) west of downtown Boise, became the state’s second largest city in the late 1990s, passing Pocatello and Idaho Falls. Nampa’s population was under 29,000 in 1990 and grew to over 81,000 by 2010. Located between Nampa and Boise, Meridian also experienced high growth, from under 10,000 residents in 1990 to over 75,000 in 2010 and is now Idaho’s third largest city. Growth of 5% or more over the same period has also been observed in Caldwell, Coeur d’Alene, Post Falls, and Twin Falls.
From 1990 to 2010, Idaho’s population increased by over 560,000 (55%). The Boise Metropolitan Area (officially known as the Boise City-Nampa, ID Metropolitan Statistical Area) is Idaho’s largest metropolitan area. Other metropolitan areas in order of size are Coeur d’Alene, Idaho Falls, Pocatello and Lewiston.
The table below shows the racial composition of Idaho’s population as of 2016.
According to the 2016 American Community Survey, 12.0% of Idaho’s population were of Hispanic or Latino origin (of any race): Mexican (10.4%), Puerto Rican (0.2%), Cuban (approx. 0.0%), and other Hispanic or Latino origin (1.3%). The five largest ancestry groups were: German (17.5%), English (16.4%), Irish (9.3%), American (8.1%), and Scottish (3.2%).
Note: Births in table don’t add up, because Hispanics are counted both by their ethnicity and by their race, giving a higher overall number.
According to the Pew Research Center on Religion & Public Life, the self-identified religious affiliations of Idahoans over the age of 18 in 2008 and 2014 were:
According to the Association of Religion Data Archives, the largest denominations by number of members in 2010 were The Church of Jesus Christ of Latter-day Saints with 409,265; the Catholic Church with 123,400; the non-denominational Evangelical Protestant with 62,637; and the Assemblies of God with 22,183.
English is the state’s predominant language. Minority languages include Spanish  and various Native American languages.
Zip Code Map
Idaho neighborhoods include: Aberdeen, Ahsahka, Albion, American Falls, Ammon, Arimo, Ashton, Athol, Atlanta, Atomic City, Avery, Banks, Bayview, Bellevue, Blackfoot, Blanchard, Bliss, Boise, Bruneau, Buhl, Burley, Calder, Caldwell, Carey, Careywood, Carmen, Cataldo, Centerville, Challis, Chubbuck, Clark Fork, Clarkia, Cocolalla, Coeur D Alene, Coolin, Corral, Cottonwood, Council, Craigmont, Culdesac, Dalton Gardens, Deary, Declo, Dietrich, Downey, Driggs, Eagle, East Magic, Eden, Elk City, Elk River, Ellis, Fairfield, Felt, Ferdinand, Firth, Fruitvale, Gannett, Garden City, Garden Valley, Genesee, Gibbonsville, Glenns Ferry, Gooding, Grangeville, Greencreek, Greenleaf, Hagerman, Hailey, Hamer, Hammett, Harrison, Harvard, Hauser, Hayden, Hayden Lake, Hazelton, Holbrook, Homedale, Hope, Horseshoe Bend, Idaho City, Idaho Falls, Indian Valley, Inkom, Iona, Irwin, Island Park, Jerome, Juliaetta, Kamiah, Kellogg, Kendrick, Ketchum, King Hill, Kingston, Kooskia, Kuna, Lapwai, Lava Hot Springs, Leadore, Lenore, Lewiston, Lewisville, Lowman, Lucile, Malad City, Marsing, May, McCall, McCammon, Medimont, Melba, Menan, Meridian, Mesa, Middleton, Monteview, Moscow, Mountain Home, Mountain Home A F B, Mullan, Murtaugh, Nampa, Newdale, New Meadows, Nezperce, Nordman, North Fork, Oakley, Oldtown, Onaway, Orofino, Parma, Paul, Peck, Picabo, Pierce, Pinehurst, Pingree, Placerville, Plummer, Pocatello, Pollock, Post Falls, Potlatch, Priest Lake, Priest River, Princeton, Rathdrum, Reubens, Rexburg, Richfield, Rigby, Riggins, Ririe, Roberts, Sagle, Saint Anthony, Saint Maries, Salmon, Sandpoint, Shelley, Shoshone, Shoup, Silverton, Smelterville, Spalding, Spirit Lake, Springfield, Star, Star Ranch, Sterling, Stone, Sugar City, Swan Valley, Sweet, Terreton, Teton, Tetonia, Troy, Twin Falls, Victor, Viola, Wallace, Wardner, Wayan, Weippe, Wendell, White Bird, Wilder, Winchester, Worley
For more information, see Idaho wiki