Ranking of Idaho Counties By Population in 2015

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2015, the Population for Idaho was 1.65M. Among all Idaho counties, Ada County had the highest population (433.25K), followed by Canyon County (206.96K), and Kootenai County (149.57K).

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 2015
Ada
Canyon
Kootenai
Bonneville
Bannock
Twin Falls
Bingham
Bonner
Nez Perce
Latah
Ranking of Idaho Counties By Population in 2015
Items per page:
0 of 0
Rank County Population
1 Ada County 433254
2 Canyon County 206956
3 Kootenai County 149566
4 Bonneville County 109916
5 Bannock County 84263
6 Twin Falls County 82289
7 Bingham County 45071
8 Bonner County 41656
9 Nez Perce County 40039
10 Latah County 38860
11 Madison County 38120
12 Jefferson County 27133
13 Elmore County 25861
14 Cassia County 23497
15 Jerome County 22960
16 Payette County 22833
17 Blaine County 21659
18 Minidoka County 20431
19 Gem County 16706
20 Idaho County 16312
21 Gooding County 15181
22 Franklin County 12974
23 Fremont County 12824
24 Shoshone County 12446
25 Boundary County 11310
26 Owyhee County 11294
27 Teton County 10744
28 Valley County 10058
29 Washington County 9894
30 Benewah County 8999
31 Clearwater County 8554
32 Lemhi County 7744
33 Power County 7690
34 Boise County 6963
35 Caribou County 6732
36 Bear Lake County 5883
37 Lincoln County 5312
38 Oneida County 4249
39 Custer County 4061
40 Adams County 3891
41 Lewis County 3792
42 Butte County 2565
43 Camas County 1068
44 Clark County 885