Idaho County, Idaho

Idaho County: County in Idaho, United States

About

Idaho County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 16,267 and a population density of 1 people per km². After 9 years in 2019 county had an estimated population of 16,667 inhabitants. Its county seat is Grangeville. The county was created 160 years ago in 1864.

Idaho County locator map
Location of Idaho County on Idaho map.

Quick Facts about Idaho County

Population : 16,667 (2019)
Country : United States of America
State : Idaho (United States)
Area : 22021 km2
Official name : Idaho County
Water as percent of area : 0.3%
Land as percent of area : 99.7%
Named for : Idaho
Altitude : 9,439 feet / 2877 meters
Capital : Grangeville
Establishment : February 02, 1864
Time Zone : America/Los_Angeles
Local time : 16:48:38 (9th November 2024)
Density : 1 Pop. per km² as of 2019
Population growth : 2.4% (2010-2019)
Tolo-lake-idaho-august-2010-roger-peterson-006 '5623157536' image
Tolo-lake-idaho-august-2010-roger-peterson-006 '5623157536'
Tolo-lake-idaho-august-2010-roger-peterson-006 '5623157536' image
Tolo-lake-idaho-august-2010-roger-peterson-006 '5623157536' image

Geography

Idaho County is located at 45°50'39"N 115°28'3"W (45.8442000, -115.4674500). It has 9 neighbors: Adams County, Clearwater County, Lemhi County, Lewis County, Nez Perce County, Valley County, Missoula County, Ravalli County and Wallowa County.

Idaho County map

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The largest city of Idaho County is Grangeville with a population of 3,237. Other cities include, Kooskia population 664, Riggins population 416, Stites population 232 and Ferdinand population 162. See all Idaho County cities & populated places.

Idaho County Populated Places

Cities, towns, neighborhoods & other populated places in Idaho County.

City Name Population Title
Grangeville 3,237 City in and county seat of Idaho County, Idaho, United States
Cottonwood 940 Town in Idaho County, Idaho, United States
Kooskia 664 City in Idaho County, Idaho, United States
Riggins 416 City in Idaho County, Idaho, United States
Stites 232 City in Idaho County, Idaho, United States
Ferdinand 162 City in Idaho, United States
White Bird 95 City in Idaho County, Idaho, United States

Idaho County has 9 neighbours.

  • Grangeville

Demographics

The population of Idaho County increased by 2.4% in 9 years.

Year Population % Change Method
2010 16,267 - census
2011 16,462 1.18% estimation process
2012 16,444 -0.11% estimation process
2013 16,249 -1.2% estimation process
2014 16,275 0.16% estimation process
2015 16,301 0.16% estimation process
2016 16,236 -0.4% estimation process
2017 16,373 0.84% estimation process
2018 16,476 0.63% estimation process
2019 16,667 1.15% estimation process

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Idaho Other Counties (more counties)

County Name Population Title
Ada County 481,587 County in Idaho, United States
Canyon County 229,849 County in Idaho, United States
Boise 228,959 The capital of Idaho.
Kootenai County 165,697 County in Idaho, United States
Bonneville County 119,062 County in Idaho, United States
Meridian 114,161 The most populous city in Ada County, Idaho.
Nampa 99,277 The most populous city in Canyon County, Idaho.
Bannock County 87,808 County in Idaho, United States
Twin Falls County 86,878 County in Idaho, United States
Idaho Falls 62,888 The most populous city in Bonneville County, Idaho.
Caldwell 58,481 The most populous city in Canyon County, Idaho.
Pocatello 56,637 The most populous city in Bannock County, Idaho.
Coeur d'Alene 52,414 A city in Kootenai County, Idaho.
Twin Falls 50,197 The most populous city in Twin Falls County, Idaho.
Bingham County 46,811 County in Idaho, United States
Bonner County 45,739 County in Idaho, United States