Gem County, Idaho

Gem County: County in Idaho, United States

About

Gem County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 16,719 and a population density of 11 people per km². After 9 years in 2019 county had an estimated population of 18,112 inhabitants. Its county seat is Emmett. The county was created 110 years ago in 1915.

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

Quick Facts about Gem County

Population : 18,112 (2019)
Country : United States of America
State : Idaho (United States)
Area : 1465 km2
Water as percent of area : 0.8%
Land as percent of area : 99.2%
Altitude : 6,158 feet / 1877 meters
Capital : Emmett
Establishment : March 03, 1915
Time Zone : America/Boise
Local time : 05:49:37 (5th December 2025)
Density : 12 Pop. per km² as of 2019
Population growth : 7.69% (2010-2019)
GEM COUNTY COURTHOUSE image
GEM COUNTY COURTHOUSE
GEM COUNTY COURTHOUSE image
GEM COUNTY COURTHOUSE image

Geography

Gem County is located at 44°3'42"N 116°23'50"W (44.0616900, -116.3972300). It has 7 neighbors: Ada County, Adams County, Boise County, Canyon County, Payette County, Valley County and Washington County.

Gem County map

Click "full screen" full screen map icon to open full mode. View satellite images

The largest city of Gem County is Emmett with a population of 7,054. . See all Gem County cities & populated places.

Gem County Populated Places

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

City Name Population Title
Emmett 7,054 City in Gem County, Idaho, United States

Gem County has 7 neighbours.

Demographics

The population of Gem County increased by 7.69% in 9 years.

Year Population % Change Method
2010 16,719 - census
2011 16,692 -0.16% estimation process
2012 16,630 -0.37% estimation process
2013 16,569 -0.37% estimation process
2014 16,646 0.46% estimation process
2015 16,685 0.23% estimation process
2016 16,959 1.62% estimation process
2017 17,311 2.03% estimation process
2018 17,587 1.57% estimation process
2019 18,112 2.9% estimation process

Comitatul Gem, Comte de Gem, Comté de Gem, Condado de Gem, Condado han Gem, Contea di Gem, Dzhem, Gem, Gem Kun, Gem Kūn, Gem konderria, Gem megye, Hrabstwo Gem, Jem srjan, Okrug DZem, Quan Gem, Quận Gem, gema ka'unti, jemu jun, jie mu xian, mqatʿt ghym, Джем, Округ Џем, Ջեմ շրջան, جم کاؤنٹی، اڈاہو, جیم کاؤنٹی، ایڈاہو, مقاطعة غيم, গেম কাউন্টি, ジェム郡, 傑姆縣

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