Idaho is divided into 44 counties, each governed by its own local administration and rich in unique history, geography, and culture. From the mountainous landscapes of Blaine County to the agricultural heartlands of Canyon County, every region offers something distinct.

Interactive Map of All Idaho Counties

Click on any county below to explore more about it.

No.	County Name	Largest City	County Map & Zip Code
1	Ada	Boise	Ada County Map Link
2	Adams	Council	Adams County Map Link
3	Bannock	Pocatello	Bannock County Map Link
4	Bear Lake	Montpelier	Bear Lake County Map Link
5	Benewah	St. Maries	Benewah County Map Link
6	Bingham	Blackfoot	Bingham County Map Link
7	Blaine	Hailey	Blaine County Map Link
8	Boise	Idaho City	Boise County Map Link
9	Bonner	Sandpoint	Bonner County Map Link
10	Bonneville	Idaho Falls	Bonneville County Map Link
11	Boundary	Bonners Ferry	Boundary County Map Link
12	Butte	Arco	Butte County Map Link
13	Camas	Fairfield	Camas County Map Link
14	Canyon	Nampa	Canyon County Map Link
15	Caribou	Soda Springs	Caribou County Map Link
16	Cassia	Burley	Cassia County Map Link
17	Clark	Dubois	Clark County Map Link
18	Clearwater	Orofino	Clearwater County Map Link
19	Custer	Challis	Custer County Map Link
20	Elmore	Mountain Home	Elmore County Map Link
21	Franklin	Preston	Franklin County Map Link
22	Fremont	St. Anthony	Fremont County Map Link
23	Gem	Emmett	Gem County Map Link
24	Gooding	Gooding	Gooding County Map Link
25	Idaho	Grangeville	Idaho County Map Link
26	Jefferson	Rigby	Jefferson County Map Link
27	Jerome	Jerome	Jerome County Map Link
28	Kootenai	Coeur d’Alene	Kootenai County Map Link
29	Latah	Moscow	Latah County Map Link
30	Lemhi	Salmon	Lemhi County Map Link
31	Lewis	Kamiah	Lewis County Map Link
32	Lincoln	Shoshone	Lincoln County Map Link
33	Madison	Rexburg	Madison County Map Link
34	Minidoka	Rupert	Minidoka County Map Link
35	Nez Perce	Lewiston	Nez Perce County Map Link
36	Oneida	Malad City	Oneida County Map Link
37	Owyhee	Homedale	Owyhee County Map Link
38	Payette	Payette	Payette County Map Link
39	Power	American Falls	Power County Map Link
40	Shoshone	Kellogg	Shoshone County Map Link
41	Teton	Driggs	Teton County Map Link
42	Twin Falls	Twin Falls	Twin Falls County Map Link
43	Valley	McCall	Valley County Map Link
44	Washington	Weiser	Washington County Map Link

Idaho County Map Download

You can download the Idaho County Map from below:

Frequently Asked Questions

The largest county in Idaho by area is Idaho County. It covers about 8,485 square miles, making it the biggest county in the state geographically.

The smallest county in Idaho by area is Payette County. It covers about 410 square miles, making it the smallest county geographically in the state.

Idaho has 44 counties in total.

Source: Wikipedia, Census.gov