Ranking of Idaho Counties By Population in 2019

Updated on June 21, 2025.

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.

Related Topics: Idaho Census Vintage Data Topic List.

Data Source: US Census Bureau (Vintage), 2019 Census.

See this for other years:

Ranking of Idaho Counties By Population in 2019

Ada

Canyon

Kootenai

Bonneville

Bannock

Twin Falls

Bingham

Bonner

Nez Perce

Latah

Ranking of Idaho Counties By Population in 2019

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Rank	County	Population
1	Ada County	481880
2	Canyon County	230270
3	Kootenai County	165656
4	Bonneville County	119286
5	Bannock County	87822
6	Twin Falls County	87127
7	Bingham County	46772
8	Bonner County	45774
9	Nez Perce County	40601
10	Latah County	40372
11	Madison County	40205
12	Jefferson County	29918
13	Elmore County	27373
14	Jerome County	24486
15	Cassia County	24052
16	Payette County	24051
17	Blaine County	23012
18	Minidoka County	20910
19	Gem County	18174
20	Idaho County	16623
21	Gooding County	15290
22	Franklin County	13898
23	Fremont County	13105
24	Shoshone County	12868
25	Boundary County	12340
26	Teton County	12096
27	Owyhee County	11823
28	Valley County	11443
29	Washington County	10126
30	Benewah County	9303
31	Clearwater County	8761
32	Lemhi County	8067
33	Boise County	7903
34	Power County	7636
35	Caribou County	7149
36	Bear Lake County	6131
37	Lincoln County	5325
38	Oneida County	4500
39	Custer County	4273
40	Adams County	4265
41	Lewis County	3845
42	Butte County	2620
43	Camas County	1091
44	Clark County	838