We’ve been going state by state, analyzing and identifying the most expensive ZIP codes in each U.S. state. Right now, we’re interested in identifying the most expensive places in the Rocky Mountains. Recently, we covered the most expensive ZIP codes in Colorado, Montana, Utah, and Wyoming. Here, we’re analyzing and determining the most expensive ZIP codes in Idaho.
Read on to find out the most expensive ZIP codes in Idaho in 2025, based on the latest data from Zillow’s home value index.
The Most Expensive ZIP Codes in Idaho
We made use on data from Zillow’s home value index, plus the Census Bureau’s 2023 American Community Survey, we analyzed thousands of ZIP codes from all over the U.S. We zeroed in on the 154 ZIP codes tracked by Zillow in Idaho. As part of our analysis, we took into consideration the latest monthly home values Zillow has — December 2024 — as well as the average of 12 months of median home values from January 2024 to December 2024.
Idaho saw its cost of living rise dramatically over the last five years. A big impetus was the pandemic, which sent many out-of-state workers to the astounding views and landscapes of Idaho. The result has been home values that are out of all proportion with local incomes.
The Top 5 Most Expensive ZIP Codes in Idaho
ZIP code 83340 is the most expensive one in Idaho. This ZIP code stretches from Ketchum and Carrietown in the south to sawtooth City and Galena in the north. This ZIP code includes some scenic mountains. This is a spot that has gotten expensive fairly recently. The median household income is $86,650, which isn’t too high by the standards of other expensive ZIP codes. The average household income is $133,112. The home value appreciation in 83340 has been astounding. From an already-high median home value of $733,167 in December 2019, it grew by 93.8% (essentially doubling), reaching well over $1.420 million.
Home values climbed in the most expensive ZIP code — 83353 — at a rate similar to the No. 1 most expensive ZIP code. This ZIP code is centered on Sun Valley, and has a long border with ZIP code 83340. The median household income here is $95,568, while the average household income is $163,646. The real story, though, is home value appreciation. Back in December 2019, the median home value in 83353 was $699,144. Five years later, home values had risen by 91.1%. The median home value now is in excess of $1.336 million.
The No. 3 most expensive ZIP code is 83821 and it is centered on Coolin, with a long western border formed by Priest Lake. This ZIP code is up in the northwest corner of the state, not far from Canada. ZIP code 83821 features many beautiful lake houses. There are very few people in this ZIP code, which contains only 137 households. The average household income is $134,084, while nearly two-third (32.1%) of households earn $200,000 or more. Home value appreciation has been huge. From a median of $547,221 in December 2019, home values rose by 81.5%. By December 2024, the median home value surpassed $933,000.
The No. 4 most expensive ZIP code in Idaho is 83452. It’s centered on Tetonia and, fittingly, is just across the Wyoming border from Grand Teton. This is one of those ZIP codes that is very rural but has witnessed a major influx of wealth transform the landscape. You can see this in the incomes. The median household income in 83452 is $63,281. The average household income is $103,026. Home values in 83452 appreciated by an absurd 90.8%. In December 2019 the median home value was $468,646. By December 2024, it had soared to $894,388.
The fifth most expensive ZIP code in Idaho is south of Coeur d’Alene. ZIP code 83833 lies along Harrison slough and is centered on Harrison. Like the third most expensive ZIP code, lake houses are big in 83833. The median household income here is $90,268, while the average household income is $110,922. Once again, home values here came close to doubling over the last five years. In December 2019, the median home value was $468,112. Five years later, it had climbed by 88.7%, reaching $883,287. The biggest year-over-year increase was from 2020 to 2021, when the median home value jumped from $560,896 to $749,954.
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