Post Falls, ID ZIP codes
Post Falls, Idaho has 2 ZIP codes, including 1 PO Box ZIP. They are in Kootenai County.
- Population in these ZIPs
- 54,851
- Avg. median income
- $82,700population-weighted
- Typical home value
- $536,200population-weighted
- Metro area
- Coeur d'Alene, ID
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Post Falls, ID ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 83854 | Kootenai County | 54,851 | $82,742 | $536,200 |
| 83877 PO Box | Kootenai County | — | — | — |
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 Post Falls
Frequently asked questions
What county is Post Falls, Idaho in?
Post Falls ZIP codes are in Kootenai County.
Which Post Falls ZIP codes are PO Boxes?
83877 is a PO Box or single-organization ZIP code; it has no residential delivery area.