Caldwell, ID ZIP codes
Caldwell, Idaho has 3 ZIP codes, including 1 PO Box ZIP. They are in Canyon County.
- Population in these ZIPs
- 76,816
- Avg. median income
- $76,300population-weighted
- Typical home value
- $410,200population-weighted
- Metro area
- Boise City, ID
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Caldwell, ID ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 83605 | Canyon County | 41,325 | $68,427 | $373,700 |
| 83606 PO Box | Canyon County | — | — | — |
| 83607 | Canyon County | 35,491 | $85,399 | $452,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Caldwell
Frequently asked questions
What county is Caldwell, Idaho in?
Caldwell ZIP codes are in Canyon County.
Which Caldwell ZIP codes are PO Boxes?
83606 is a PO Box or single-organization ZIP code; it has no residential delivery area.