Ranking of Idaho Counties By Population with Scotch Irish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 16.83K people in Idaho with Scotch Irish ancestry. Among all Idaho counties, Ada County had the highest population with Scotch Irish ancestry (4.26K), followed by Kootenai County (2.43K), and Canyon County (1.36K).

The chart and table below shows the top 10 counties with high number of people with Scotch Irish ancestry.

You can see similar information for other states and for other ancestry groups in Idaho.

You may also be interested in:
Ranking of Idaho Counties By Percentage of Population with Scotch Irish Ancestry in 2021

Related Topics: Idaho ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census Bureau.

Ranking of Idaho Counties By Population with Scotch Irish Ancestry in 2021

Ada County

Kootenai County

Canyon County

Bonneville County

Bannock County

Bonner County

Latah County

Madison County

Twin Falls County

Nez Perce County

Ranking of Idaho Counties By Population with Scotch Irish Ancestry in 2021

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Rank	County	Population
1	Ada County	4261
2	Kootenai County	2428
3	Canyon County	1355
4	Bonneville County	1183
5	Bannock County	917
6	Bonner County	806
7	Latah County	638
8	Madison County	461
9	Twin Falls County	403
10	Nez Perce County	292
11	Blaine County	289
12	Jefferson County	266
13	Elmore County	259
14	Shoshone County	245
15	Gem County	230
16	Payette County	208
17	Idaho County	200
18	Minidoka County	190
19	Teton County	179
20	Boise County	172
20	Jerome County	172
21	Washington County	161
22	Clearwater County	152
23	Valley County	140
24	Bingham County	138
25	Boundary County	135
26	Lemhi County	127
27	Benewah County	113
28	Fremont County	100
29	Gooding County	96
30	Cassia County	78
31	Adams County	71
32	Lincoln County	58
33	Franklin County	55
34	Lewis County	48
35	Owyhee County	45
36	Bear Lake County	42
36	Caribou County	42
36	Custer County	42
37	Butte County	15
38	Clark County	9
39	Power County	7
40	Camas County	3