ZIP codes in Bannock County
12 ZIPs touch Bannock County, Idaho. The blue dashed line is the county border; orange ZIPs reach into it.
12
ZIP codes
2
cross the county line
91,404
people in these ZIPs
44
counties in ID
Most people
Bannock County ZIP list
More counties in Idaho
- Ada County37
- Adams County6
- Bear Lake County10
- Benewah County8
- Bingham County13
- Blaine County9
- Boise County9
- Bonner County19
Questions people actually ask
How many ZIP codes are in Bannock County, Idaho?
12 ZIP codes reach into Bannock County, including 2 PO Box or single-address ZIPs placed by the town they serve. 2 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Bannock County has the most people?
83201 (Pocatello) has about 39,902 residents, the most of any ZIP touching Bannock County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Bannock 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 Bannock 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