You’re probably never going to make enough money to live in the richest counties in Idaho.
The median household income in Teton County, the richest county in Idaho is $99,805, significantly higher than the US median of $74,580, which means based purely on math most people never make enough to live there.
And that’s okay because it’s still fun to look at the people living in the lap of luxury.
So we used Saturday Night Science and the most recent Census to rank home prices and incomes for all 44 counties in the Gem State. Let’s star gaze together.
Table Of Contents: Top Ten | Methodology | Table | Summary
The 10 Richest Counties In Idaho For 2026
What is the richest county in Idaho? The richest county in Idaho is Teton County. In contrast, the poorest county in state is Butte County, according to the Census data.
Now you know exactly where to move in Idaho. Keep on reading for more about the top ten and a detailed methodology.
Or, check out the best places to live in Idaho and the cheapest places to live in Idaho.
The Richest Counties In Idaho For 2026
1. Teton County
Biggest Place: Victor
Population: 12,425
Median Income: $99,805 (highest)
Median Home Price: $864,221 (2nd highest)
More on Teton County: Data
2. Blaine County
Biggest Place: Hailey
Population: 24,951
Median Income: $92,566 (2nd highest)
Median Home Price: $1,084,018 (highest)
More on Blaine County: Data
3. Ada County
Biggest Place: Boise City
Population: 518,935
Median Income: $91,502 (3rd highest)
Median Home Price: $521,624 (6th highest)
More on Ada County: Data
4. Kootenai County
Biggest Place: Coeur d’Alene
Population: 181,996
Median Income: $81,861 (5th highest)
Median Home Price: $596,722 (5th highest)
More on Kootenai County: Data
5. Valley County
Biggest Place: McCall
Population: 12,389
Median Income: $76,078 (10th highest)
Median Home Price: $675,255 (3rd highest)
More on Valley County: Data
6. Boise County
Biggest Place: Robie Creek
Population: 8,273
Median Income: $78,774 (7th highest)
Median Home Price: $477,626 (8th highest)
More on Boise County: Data
7. Jefferson County
Biggest Place: Rigby
Population: 33,154
Median Income: $86,679 (4th highest)
Median Home Price: $465,392 (11th highest)
More on Jefferson County: Data
8. Fremont County
Biggest Place: St. Anthony
Population: 13,943
Median Income: $72,683 (13th highest)
Median Home Price: $471,060 (10th highest)
More on Fremont County: Data
9. Bonneville County
Biggest Place: Idaho Falls
Population: 129,523
Median Income: $79,068 (6th highest)
Median Home Price: $400,909 (19th highest)
More on Bonneville County: Data
10. Canyon County
Biggest Place: Nampa
Population: 250,790
Median Income: $76,488 (9th highest)
Median Home Price: $414,203 (16th highest)
More on Canyon County: Data
Methodology: How do you determine which Idaho county is the richest?
To determine the richest county in Idaho, we have to look at a handful of metrics that correlate with how rich people are. To do that, we made assumptions about what makes a county rich. For reference, we are trying to make the kind of argument you’d make at a bar using facts, Saturday Night Science.
With that in mind, we went to the American Community Survey data and Zillow for the most recent reporting period for data on the following:
- Average Home Price
- Median Income
We then ranked each county in Idaho for each of the criteria from one to 44, with one being the richest.
Taking the average rank across the two criteria, we created a Rich Score with the county posting the lowest overall score being the “Richest County In Idaho.”
The result is some of the places with the most expensive real estate and highest earners in the Gem State.
We updated this article for 2026. This report is our first time ranking the richest counties to live in Idaho. We have also ranked the richest states and richest cities in the United States.
Summary: The Richest Counties In Idaho For 2026
Living in Idaho can vary from one part of the state to the next, with pretty extreme variance in home prices and incomes across counties.
The richest counties in Idaho are Teton County, Blaine County, Ada County, Kootenai County, Valley County, Boise County, Jefferson County, Fremont County, Bonneville County, and Canyon County.
Now you know the parts of the state where Goodwill will have the best goodies, and that’s what you came here to learn at the end of the day.
You are welcome.
Here’s a look at the poorest counties in Idaho according to the data:
- Butte County
- Lewis County
- Clark County
For more Idaho reading, check out:
- Cheapest Places To Live In Idaho
- Best Counties To Live In Idaho
- Richest Cities In Idaho
- Best Places To Live In Idaho
Detailed List Of The Richest Counties In Idaho
| Rank | County | Population | Median Income | Average Home Price |
|---|---|---|---|---|
| 1 | Teton County | 12,425 | $99,805 | $864,221 |
| 2 | Blaine County | 24,951 | $92,566 | $1,084,018 |
| 3 | Ada County | 518,935 | $91,502 | $521,624 |
| 4 | Kootenai County | 181,996 | $81,861 | $596,722 |
| 5 | Valley County | 12,389 | $76,078 | $675,255 |
| 6 | Boise County | 8,273 | $78,774 | $477,626 |
| 7 | Jefferson County | 33,154 | $86,679 | $465,392 |
| 8 | Fremont County | 13,943 | $72,683 | $471,060 |
| 9 | Bonneville County | 129,523 | $79,068 | $400,909 |
| 10 | Canyon County | 250,790 | $76,488 | $414,203 |
| 11 | Franklin County | 15,056 | $71,950 | $438,371 |
| 12 | Bonner County | 51,049 | $66,979 | $648,284 |
| 13 | Bingham County | 49,664 | $77,878 | $381,816 |
| 14 | Bear Lake County | 6,650 | $75,260 | $386,601 |
| 15 | Jerome County | 25,173 | $71,724 | $399,325 |
| 16 | Nez Perce County | 42,697 | $72,599 | $384,385 |
| 17 | Boundary County | 13,172 | $67,237 | $459,532 |
| 18 | Payette County | 26,771 | $67,673 | $411,024 |
| 19 | Gem County | 20,614 | $64,605 | $474,995 |
| 20 | Adams County | 4,744 | $61,808 | $509,844 |
| 21 | Latah County | 41,049 | $65,424 | $464,968 |
| 22 | Oneida County | 4,768 | $74,954 | $336,708 |
| 23 | Custer County | 4,470 | $67,574 | $384,183 |
| 24 | Owyhee County | 12,503 | $64,406 | $435,050 |
| 25 | Twin Falls County | 93,734 | $67,409 | $377,541 |
| 26 | Cassia County | 25,483 | $70,830 | $344,657 |
| 27 | Madison County | 54,618 | $60,160 | $411,979 |
| 28 | Caribou County | 7,162 | $68,782 | $330,405 |
| 29 | Lincoln County | 5,358 | $71,453 | $318,969 |
| 30 | Minidoka County | 22,208 | $70,377 | $323,367 |
| 31 | Idaho County | 17,432 | $66,325 | $353,958 |
| 32 | Elmore County | 29,321 | $65,359 | $355,620 |
| 33 | Bannock County | 89,454 | $66,499 | $352,606 |
| 34 | Camas County | 1,124 | $57,955 | $394,862 |
| 35 | Gooding County | 15,931 | $63,559 | $353,515 |
| 36 | Washington County | 11,142 | $54,000 | $380,273 |
| 37 | Lemhi County | 8,249 | $53,202 | $376,605 |
| 38 | Benewah County | 10,142 | $59,794 | $329,392 |
| 39 | Clearwater County | 9,012 | $60,000 | $306,782 |
| 40 | Power County | 8,133 | $61,146 | $267,828 |
| 41 | Shoshone County | 13,785 | $55,527 | $271,213 |
| 42 | Clark County | 849 | $55,208 | $258,956 |
| 43 | Lewis County | 3,682 | $51,615 | $283,683 |
| 44 | Butte County | 2,684 | $53,015 | $246,053 |