Ranking of Idaho Counties By Population in 2019

Updated on January 28, 2024.

Based on the US Census Vintage data estimates, in 2019, the Population for Idaho was 1.79M. Among all Idaho counties, Ada County had the highest population (481.88K), followed by Canyon County (230.27K), and Kootenai County (165.66K).

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 2019
Ada
481.88K
Canyon
230.27K
Kootenai
165.66K
Bonneville
119.29K
Bannock
87.82K
Twin Falls
87.13K
Bingham
46.77K
Bonner
45.77K
Nez Perce
40.60K
Latah
40.37K
Ranking of Idaho Counties By Population in 2019
Rank
County
Population
1 Ada County 481,880
2 Canyon County 230,270
3 Kootenai County 165,656
4 Bonneville County 119,286
5 Bannock County 87,822
6 Twin Falls County 87,127
7 Bingham County 46,772
8 Bonner County 45,774
9 Nez Perce County 40,601
10 Latah County 40,372
11 Madison County 40,205
12 Jefferson County 29,918
13 Elmore County 27,373
14 Jerome County 24,486
15 Cassia County 24,052
16 Payette County 24,051
17 Blaine County 23,012
18 Minidoka County 20,910
19 Gem County 18,174
20 Idaho County 16,623
21 Gooding County 15,290
22 Franklin County 13,898
23 Fremont County 13,105
24 Shoshone County 12,868
25 Boundary County 12,340
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