County Census Records
Idaho Counties
46 counties with population data from the decennial US Census, 1790 to 2020.
46 counties
Population as of 2020 census
Ada
494,967
Adams
4,379
Alturas
2,629
Bannock
87,018
Bear Lake
6,372
Benewah
9,530
Bingham
47,992
Blaine
24,272
Boise
7,610
Bonner
47,110
Bonneville
123,964
Boundary
12,056
Butte
2,574
Camas
1,077
Canyon
231,105
Caribou
7,027
Cassia
24,655
Clark
790
Clearwater
8,734
Custer
4,275
Elmore
28,666
Franklin
14,194
Fremont
13,388
Gem
19,123
Gooding
15,598
Idaho
16,541
Jefferson
30,891
Jerome
24,237
Kootenai
171,362
Latah
39,517
Lemhi
7,974
Lewis
3,533
Lincoln
5,127
Logan
4,169
Madison
52,913
Minidoka
21,613
Nez Perce
42,090
Oneida
4,564
Owyhee
11,913
Payette
25,386
Power
7,878
Shoshone
13,169
Teton
11,630
Twin Falls
90,046
Valley
11,746
Washington
10,500
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Geology
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The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
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Native Heritage
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Settlement
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The Community
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Rivers & Rail
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Notable People
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Finds & Access
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