Lewis County, Idaho

Lewis County: County in Idaho, United States

About

Lewis County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 3,821 and a population density of 3 people per km². After 9 years in 2019 county had an estimated population of 3,838 inhabitants. Its county seat is Nezperce. The county was created 114 years ago in 1911.

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

Quick Facts about Lewis County

Population : 3,838 (2019)
Country : United States of America
State : Idaho (United States)
Different from : Lewis and Clark County, Lewis County, Lewis County, Lewis County, Lewis County, Lewis County, Lewis County
Area : 1243 km2
Water as percent of area : 0.2%
Land as percent of area : 99.8%
Named for : Meriwether Lewis
Capital : Nezperce
Establishment : March 03, 1911
Time Zone : America/Los_Angeles
Local time : 08:49:37 (6th December 2025)
Density : 3 Pop. per km² as of 2019
Population growth : 0.44% (2010-2019)
State Bank of Kamiah - Kamiah Idaho image
State Bank of Kamiah - Kamiah Idaho
State Bank of Kamiah - Kamiah Idaho image
State Bank of Kamiah - Kamiah Idaho image

Geography

Lewis County is located at 46°14'13"N 116°25'35"W (46.2370200, -116.4262500). It has 3 neighbors: Clearwater County, Idaho County and Nez Perce County.

Lewis County map

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The largest city of Lewis County is Kamiah with a population of 1,244. Other cities include, Craigmont population 489, Nezperce population 458, Winchester population 443 and Reubens population 64. See all Lewis County cities & populated places.

Lewis County Populated Places

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

City Name Population Title
Kamiah 1,244 City in Lewis County, Idaho, United States
Craigmont 489 City in Lewis County, Idaho, United States
Nezperce 458 City in Lewis County, Idaho, United States
Winchester 443 City in Lewis County, Idaho, United States
Reubens 64 City in Lewis County, Idaho, United States

Lewis County has 3 neighbours.

  • Nezperce

Demographics

The population of Lewis County increased by 0.44% in 9 years.

Year Population % Change Method
2010 3,821 - census
2011 3,806 -0.39% estimation process
2012 3,820 0.37% estimation process
2013 3,805 -0.39% estimation process
2014 3,813 0.21% estimation process
2015 3,791 -0.58% estimation process
2016 3,846 1.43% estimation process
2017 3,884 0.98% estimation process
2018 3,832 -1.36% estimation process
2019 3,838 0.16% estimation process

Comitatul Lewis, Comte de Lewis, Comté de Lewis, Condado de Lewis, Condado han Lewis, Contea di Lewis, Hrabstwo Lewis, L'juis, Lewis, Lewis Kun, Lewis Kūn, Lewis konderria, Lewis megye, Luis, Luis srjan, Okrug Luis, Quan Lewis, Quận Lewis, leraisa ka'unti, liu yi si xian, mqatʿt lwys, ruisu jun, shhrstan lwys aydahw, Луис, Льюис, Льюїс, Округ Луис, Լուիս շրջան, شهرستان لویس، آیداهو, لوئیس کاؤنٹی، ایڈاہو, لیوس کاؤنٹی، اڈاہو, مقاطعة لويس, লেৱিস কাউন্টি, ルイス郡, 劉易斯縣

Other places with the same name (7)

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