What is the population of Lewis County?

The population of Lewis County, ID is 3,838.

Where is Lewis County located?

Lewis County, ID is located at latitude 46.2370200 and longitude -116.4262500. It is in United States.

What is the area of Lewis County?

The area of Lewis County, ID is 1243 km².

What is the elevation of Lewis County?

Lewis County, ID has an elevation of 1112 meters (3648 feet) above sea level.

What time zone is Lewis County in?

Lewis County, ID is in the America/Los_Angeles time zone.

How has the population of Lewis County changed?

The population of Lewis County, ID has increased from 3,821 (2010) to 3,838 (2019), a change of 0.4%.

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 115 years ago in 1911.

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

County Snapshot

Lewis County at a glance

Lewis County currently has 5 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Idaho counties

Open related pages

Largest city

Kamiah

Population 1,244

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%
Latitude & Longitude	46.2370,-116.4263
Named for	Meriwether Lewis
Capital	Nezperce
Establishment	March 03, 1911
Time Zone	America/Los_Angeles
Local time	16:55:54 (17th April 2026)
Density	3 Pop. per km² as of 2019
Population growth	0.44% (2010-2019)
Weather	47℉ Partly Sunny 7-days weather

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

Weather

47°F

Partly Sunny

9 mph NW This Afternoon

Partly sunny, with a high near 47. Northwest wind around 9 mph.

7-Day Forecast

Official website of Lewis County

Official Website

Lewis County has 3 neighbours.

Clearwater County county in Idaho, United States
Idaho County county in Idaho, United States
Nez Perce County county in Idaho, United States

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 (6)

Lewis County, Washington county in the state of Washington, United States with a population of 82,109 people.
Lewis County, New York county in New York, United States with a population of 26,187 people.
Lewis County, West Virginia county in West Virginia, United States with a population of 15,805 people.
Lewis County, Kentucky county in Kentucky, United States with a population of 13,262 people.
Lewis County, Tennessee county in Tennessee, United States with a population of 12,363 people.
Lewis County, Missouri county in Northeast Missouri, United States with a population of 9,810 people.

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