ZIP codes in Canyon County
17 ZIPs touch Canyon County, Idaho. The blue dashed line is the county border; orange ZIPs reach into it.
17
ZIP codes
6
cross the county line
306,566
people in these ZIPs
44
counties in ID
Most people
Canyon County ZIP list
More counties in Idaho
- Boise County9
- Bonner County19
- Bonneville County16
- Boundary County6
- Butte County3
- Camas County4
- Caribou County6
- Cassia County9
- Clark County4
- Clearwater County7
- Custer County7
- Elmore County9
Questions people actually ask
How many ZIP codes are in Canyon County, Idaho?
17 ZIP codes reach into Canyon County, including 4 PO Box or single-address ZIPs placed by the town they serve. 6 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Canyon County has the most people?
83686 (Nampa) has about 60,993 residents, the most of any ZIP touching Canyon County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Canyon 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 Canyon 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