Custer County, ID ZIP Codes
7 ZIP codes cover all or part of Custer County, Idaho: 83226, 83251, 83255, 83278, 83227, 83253 and 83235. The Census Bureau counts 4,470 residents in the county, with a median household income of $67,574 and a median home value of $381,700. Median household income ranges from $36,458 in 83226 to $73,482 in 83251. Its largest communities include Challis, Mackay, Stanley, Lost River and Clayton.
Custer County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 4,470 |
| Households | 1,943 |
| Median household income | $67,574 |
| Median home value | $381,700 |
| Median age | 60 |
| Median rent | $691 |
All 7 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 5,532 |
| Households (sum of ZIP codes) | 2,301 |
| Median household income, range across ZIP codes | $36,458 (83226) to $73,482 (83251) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $55,638 |
| Homeowners | 79.5% |
| Households with kids under 18 | 16.7% |
| Moved in the past year | 9.4% |
| Carrier routes in EDDM2GO's route library | 6 routes, 728 homes (2 of 7 ZIP codes) |
Top facts
- Highest median household income in Custer County: 83251 ($73,482)
- Most residents: 83226 (2,100 people)
- Highest homeownership: 83255 (85.8% own their home)
- Most households with kids: 83226 (22.4% of households)
- Most new movers: 83226 (12.7% moved in last year)
- Youngest median age: 83255 (45.2 years)
- Highest median home value: 83251 ($366,900)
Every ZIP code in Custer County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 83226 | Challis | 2,100 | 899 | $36,458 | $358,700 | 69.1% | 22.4% | 12.7% | 4 | 718 | 87% of its land |
| 83251 | Mackay | 1,443 | 603 | $73,482 | $366,900 | 79.3% | 10.9% | 4.7% | — | — | 100% of its land |
| 83255 | Moore | 1,222 | 430 | $70,714 | $283,200 | 85.8% | 19.1% | 6.9% | — | — | 10% of its land |
| 83278 | Stanley | 454 | 256 | $81,602 | $606,300 | 99.2% | 0.0% | 15.0% | 2 | 45 | 100% of its land |
| 83227 | Clayton | 200 | 77 | — | $214,400 | 100.0% | 33.8% | 4.0% | — | — | 100% of its land |
| 83253 | Lemhi County | 112 | 36 | — | — | 80.6% | 27.8% | 19.6% | — | — | 28% of its land |
| 83235 | Custer County | 1 | 0 | — | — | — | — | 100.0% | — | — | 94% of its land |
A ZIP code is listed for Custer County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Challis — 854 residents · 1 ZIP code
- Mackay — 602 residents · 1 ZIP code
- Stanley — 319 residents · 1 ZIP code
- Lost River — 55 residents · 2 ZIP codes
- Clayton — 0 residents · 1 ZIP code
Price a mailing to Custer County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Custer County, ID?
- 83226, 83251, 83255, 83278, 83227, 83253 and 83235. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Custer County?
- 4,470 residents in 1,943 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Custer County?
- $67,574 for the county as a whole. Its ZIP codes range from $36,458 (83226) to $73,482 (83251).
- Which Custer County ZIP code has the highest median household income?
- 83251, at $73,482, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Custer County?
- For the 2 of 7 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 728 residential and 35 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.