Custer County, Idaho ZIP Codes
- ZIP records
5 - Cities represented
5 - Sum of listed ZIP population estimates
4,198
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 83226 | Challis | 2,100 |
| 2 | 83251 | Mackay | 1,443 |
| 3 | 83278 | Stanley | 454 |
| 4 | 83227 | Clayton | 200 |
| 5 | 83235 | Ellis | 1 |
Cities in Custer County
ZIP Directory
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.