ZIP codes in Lemhi County
12 ZIPs touch Lemhi County, Idaho. The blue dashed line is the county border; orange ZIPs reach into it.
12
ZIP codes
4
cross the county line
10,349
people in these ZIPs
44
counties in ID
Most people
Lemhi County ZIP list
More counties in Idaho
- Gooding County6
- Idaho County16
- Jefferson County10
- Jerome County5
- Kootenai County15
- Latah County13
- Lewis County7
- Lincoln County6
- Madison County9
- Minidoka County6
- Nez Perce County10
- Oneida County4
Questions people actually ask
How many ZIP codes are in Lemhi County, Idaho?
12 ZIP codes reach into Lemhi County, including 1 PO Box or single-address ZIPs placed by the town they serve. 4 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Lemhi County has the most people?
83467 (Salmon) has about 6,590 residents, the most of any ZIP touching Lemhi County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Lemhi County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Lemhi County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from