Population in Idaho by County

Total population.

U.S. Census Bureau · ACS 5-year 2020-2024 · Updated November 2026

Idaho

1,934,262

Counties

44

Highest

Ada

518,935

Lowest

Clark

849

All Idaho counties, ranked

# Counties Population
1 Ada 518,935
2 Canyon 250,790
3 Kootenai 181,996
4 Bonneville 129,523
5 Twin Falls 93,734
6 Bannock 89,454
7 Madison 54,618
8 Bonner 51,049
9 Bingham 49,664
10 Nez Perce 42,697
11 Latah 41,049
12 Jefferson 33,154
13 Elmore 29,321
14 Payette 26,771
15 Cassia 25,483
16 Jerome 25,173
17 Blaine 24,951
18 Minidoka 22,208
19 Gem 20,614
20 Idaho 17,432
21 Gooding 15,931
22 Franklin 15,056
23 Fremont 13,943
24 Shoshone 13,785
25 Boundary 13,172
26 Owyhee 12,503
27 Teton 12,425
28 Valley 12,389
29 Washington 11,142
30 Benewah 10,142
31 Clearwater 9,012
32 Boise 8,273
33 Lemhi 8,249
34 Power 8,133
35 Caribou 7,162
36 Bear Lake 6,650
37 Lincoln 5,358
38 Oneida 4,768
39 Adams 4,744
40 Custer 4,470
41 Lewis 3,682
42 Butte 2,684
43 Camas 1,124
44 Clark 849

About this dataset

Total population. Source: ACS 5-year 2020-2024 Data Profile, variable DP05_0001E. Values in people.

Source
U.S. Census Bureau
Citation
U.S. Census Bureau, American Community Survey 5-Year Estimates Data Profiles (2020-2024), DP05_0001E
Vintage
ACS 5-year 2020-2024
License
Public domain (U.S. Census Bureau)
Unit
people
Available at
State · County · ZIP code
Territory roll-up
Summed across each territory
Last loaded
November 2026

Map Idaho territories with population

Build Idaho territories by county and overlay this layer on the map.

Start your free trial

Population by county in other states

Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

US Population nationwide