Ranking of Idaho Counties By Population in 2017

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2017, the Population for Idaho was 1.72M. Among all Idaho counties, Ada County had the highest population (456.99K), followed by Canyon County (217.04K), and Kootenai County (157.59K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Idaho counties.

You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.

See this for other years:
Ranking of Idaho Counties By Population in 2017
Ada
Canyon
Kootenai
Bonneville
Bannock
Twin Falls
Bingham
Bonner
Nez Perce
Latah
Ranking of Idaho Counties By Population in 2017
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Rank County Population
1 Ada County 456994
2 Canyon County 217037
3 Kootenai County 157594
4 Bonneville County 114608
5 Bannock County 85571
6 Twin Falls County 85439
7 Bingham County 45888
8 Bonner County 43715
9 Nez Perce County 40376
10 Latah County 39903
11 Madison County 39540
12 Jefferson County 28448
13 Elmore County 26907
14 Jerome County 23791
15 Cassia County 23661
16 Payette County 23218
17 Blaine County 22401
18 Minidoka County 20683
19 Gem County 17351
20 Idaho County 16392
21 Gooding County 15155
22 Franklin County 13501
23 Fremont County 13140
24 Shoshone County 12511
25 Boundary County 11995
26 Owyhee County 11632
27 Teton County 11463
28 Valley County 10700
29 Washington County 10055
30 Benewah County 9167
31 Clearwater County 8651
32 Lemhi County 7837
33 Power County 7587
34 Boise County 7370
35 Caribou County 6980
36 Bear Lake County 6029
37 Lincoln County 5361
38 Oneida County 4393
39 Custer County 4138
40 Adams County 4128
41 Lewis County 3883
42 Butte County 2582
43 Camas County 1092
44 Clark County 878